diff --git a/openhis-ui-vue3/src/views/outpatient/examination/ExaminationApply.vue b/openhis-ui-vue3/src/views/outpatient/examination/ExaminationApply.vue
index 15ded3193..6321f2396 100644
--- a/openhis-ui-vue3/src/views/outpatient/examination/ExaminationApply.vue
+++ b/openhis-ui-vue3/src/views/outpatient/examination/ExaminationApply.vue
@@ -2,14 +2,15 @@
   <div class="examination-apply-container">
     <el-row :gutter="16">
       <!-- 左侧：检查项目分类 -->
-      <el-col :span="6">
+      <el-col :span="5">
         <el-card shadow="never" class="panel-card">
           <template #header>检查项目分类</template>
           <el-tree
-            :data="categoryTree"
+            ref="categoryTreeRef"
+            :data="categoryList"
             :props="{ label: 'name', children: 'children' }"
-            node-key="id"
             highlight-current
+            node-key="id"
             @node-click="handleCategoryClick"
           />
         </el-card>
@@ -19,52 +20,51 @@
       <el-col :span="9">
         <el-card shadow="never" class="panel-card">
           <template #header>检查项目</template>
-          <div class="exam-item-list">
-            <div v-for="item in currentItems" :key="item.id" class="item-row">
-              <el-checkbox
-                v-model="item.checked"
-                :label="cleanName(item.name)"
-                @change="handleItemCheck(item)"
-              />
-            </div>
-            <el-empty v-if="currentItems.length === 0" description="请选择左侧分类" />
+          <div class="item-scroll-area">
+            <el-checkbox-group v-model="selectedItemIds" @change="handleItemChange">
+              <div v-for="item in currentItems" :key="item.id" class="list-item">
+                <el-checkbox :label="item.id" :value="item.id">
+                  <span class="item-label">{{ item.name }}</span>
+                </el-checkbox>
+              </div>
+            </el-checkbox-group>
           </div>
         </el-card>
       </el-col>
 
-      <!-- 右侧：已选择区域 -->
-      <el-col :span="9">
+      <!-- 右侧：已选择 & 检查方法 -->
+      <el-col :span="10">
         <el-card shadow="never" class="panel-card">
-          <template #header>已选择</template>
-          <div class="selected-area">
-            <el-collapse v-model="activeCollapse" accordion>
-              <el-collapse-item
-                v-for="selected in selectedItems"
-                :key="selected.id"
-                :name="selected.id"
-              >
-                <template #title>
-                  <div class="card-title" :title="cleanName(selected.name)">
-                    {{ cleanName(selected.name) }}
-                  </div>
-                </template>
-                <div class="detail-hierarchy">
-                  <div class="method-section">
-                    <span class="section-label">检查方法：</span>
-                    <el-checkbox-group v-model="selected.selectedMethods">
-                      <el-checkbox
-                        v-for="method in selected.methods"
-                        :key="method.id"
-                        :label="method.id"
-                      >
+          <template #header>已选择项目</template>
+          <div v-if="structuredSelected.length === 0" class="empty-state">
+            请在左侧选择检查项目
+          </div>
+          <div v-else class="selected-wrapper">
+            <div v-for="group in structuredSelected" :key="group.id" class="selected-group">
+              <!-- 父级项目卡片 -->
+              <div class="selected-card" @click="toggleExpand(group.id)">
+                <el-tooltip :content="group.name" placement="top" :show-after="300" :offset="10">
+                  <span class="card-name">{{ group.name }}</span>
+                </el-tooltip>
+                <el-icon class="expand-icon">
+                  <ArrowRight v-if="!group.expanded" />
+                  <ArrowDown v-else />
+                </el-icon>
+              </div>
+
+              <!-- 子级检查方法明细（默认收起） -->
+              <transition name="slide-fade">
+                <div v-show="group.expanded" class="method-panel">
+                  <el-checkbox-group v-model="selectedMethodIds" @change="handleMethodChange">
+                    <div v-for="method in group.methods" :key="method.id" class="method-item">
+                      <el-checkbox :label="method.id" :value="method.id">
                         {{ method.name }}
                       </el-checkbox>
-                    </el-checkbox-group>
-                  </div>
+                    </div>
+                  </el-checkbox-group>
                 </div>
-              </el-collapse-item>
-            </el-collapse>
-            <el-empty v-if="selectedItems.length === 0" description="暂无选择项目" />
+              </transition>
+            </div>
           </div>
         </el-card>
       </el-col>
@@ -72,100 +72,158 @@
   </div>
 </template>
 
-<script setup>
-import { ref, reactive } from 'vue'
+<script setup lang="ts">
+import { ref, computed } from 'vue';
+import { ArrowRight, ArrowDown } from '@element-plus/icons-vue';
+import { ElMessage } from 'element-plus';
 
-// 模拟分类数据
-const categoryTree = ref([
-  { id: 1, name: '彩超', children: [] },
-  { id: 2, name: 'CT', children: [] }
-])
+// 模拟分类与项目数据结构（实际应从API获取）
+interface Category { id: string; name: string; children?: Category[] }
+interface ExamItem { id: string; name: string; methods?: { id: string; name: string }[] }
 
-// 当前分类下的项目
-const currentItems = ref([])
+const categoryList = ref<Category[]>([]);
+const currentItems = ref<ExamItem[]>([]);
+const selectedItemIds = ref<string[]>([]);
+const selectedMethodIds = ref<string[]>([]);
 
-// 已选择项目列表
-const selectedItems = ref([])
-const activeCollapse = ref([]) // 默认空数组，实现默认收起
+// 结构化已选数据：严格遵循 项目 > 检查方法 层级
+const structuredSelected = ref<{
+  id: string;
+  name: string;
+  expanded: boolean;
+  methods: { id: string; name: string }[];
+}[]>([]);
 
-// 清理名称中的冗余“套餐”字样
-const cleanName = (name) => name.replace(/套餐/g, '')
+// 分类点击：加载对应项目，并准备关联方法（不自动勾选）
+const handleCategoryClick = (data: any) => {
+  // 实际调用: fetchExamItemsByCategory(data.id)
+  currentItems.value = data.items || [];
+};
 
-// 切换分类加载项目
-const handleCategoryClick = (data) => {
-  // 实际项目中此处应调用 API 获取项目列表
-  currentItems.value = [
-    { id: 101, name: '128线排套餐', checked: false, methods: [
-      { id: 'm1', name: '常规' },
-      { id: 'm2', name: '增强' }
-    ]}
-  ]
-}
+// 项目勾选变化（独立解耦）
+const handleItemChange = (ids: string[]) => {
+  const added = ids.filter(id => !selectedItemIds.value.includes(id));
+  const removed = selectedItemIds.value.filter(id => !ids.includes(id));
 
-// 核心修复1：项目勾选与检查方法解耦，禁止自动联动勾选
-const handleItemCheck = (item) => {
-  if (item.checked) {
-    // 仅当未添加时才加入已选列表
-    const exists = selectedItems.value.find(s => s.id === item.id)
-    if (!exists) {
-      selectedItems.value.push({
+  // 新增项目：清理"套餐"前缀，默认收起，注入关联方法
+  added.forEach(id => {
+    const item = currentItems.value.find(i => i.id === id);
+    if (item) {
+      structuredSelected.value.push({
         id: item.id,
-        name: item.name,
-        methods: item.methods,
-        selectedMethods: [], // 独立维护方法勾选状态，初始为空
-        checked: true
-      })
+        name: item.name.replace(/^套餐[：:]/, ''), // 去除冗余前缀
+        expanded: false, // 默认收起
+        methods: item.methods || []
+      });
     }
-  } else {
-    // 取消勾选时移除
-    selectedItems.value = selectedItems.value.filter(s => s.id !== item.id)
-    activeCollapse.value = activeCollapse.value.filter(id => id !== item.id)
+  });
+
+  // 移除项目：同步清理其下的已选方法
+  if (removed.length > 0) {
+    structuredSelected.value = structuredSelected.value.filter(g => ids.includes(g.id));
+    const validMethodIds = new Set(
+      structuredSelected.value.flatMap(g => g.methods.map(m => m.id))
+    );
+    selectedMethodIds.value = selectedMethodIds.value.filter(mId => validMethodIds.has(mId));
   }
-}
+
+  selectedItemIds.value = ids;
+};
+
+// 检查方法勾选变化（独立解耦）
+const handleMethodChange = (ids: string[]) => {
+  selectedMethodIds.value = ids;
+};
+
+// 展开/收起明细
+const toggleExpand = (id: string) => {
+  const group = structuredSelected.value.find(g => g.id === id);
+  if (group) group.expanded = !group.expanded;
+};
 </script>
 
 <style scoped>
 .examination-apply-container {
   padding: 16px;
   background: #f5f7fa;
-  min-height: 100%;
+  min-height: 100vh;
 }
 .panel-card {
   height: 100%;
+  border-radius: 8px;
 }
-.exam-item-list {
+.item-scroll-area {
+  max-height: 500px;
+  overflow-y: auto;
+  padding-right: 8px;
+}
+.list-item {
+  padding: 10px 0;
+  border-bottom: 1px dashed #ebeef5;
+}
+.item-label {
+  font-size: 14px;
+  color: #303133;
+}
+.selected-wrapper {
   max-height: 500px;
   overflow-y: auto;
 }
-.item-row {
-  padding: 8px 0;
-  border-bottom: 1px dashed #ebeef5;
+.selected-card {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 12px;
+  background: #ffffff;
+  border: 1px solid #dcdfe6;
+  border-radius: 6px;
+  cursor: pointer;
+  margin-bottom: 8px;
+  transition: all 0.2s;
 }
-.selected-area {
-  min-height: 200px;
+.selected-card:hover {
+  border-color: #409eff;
+  background: #ecf5ff;
 }
-/* 核心修复2：卡片宽度自适应，超长省略并支持悬停提示 */
-.card-title {
-  width: 100%;
-  max-width: 220px;
+.card-name {
+  flex: 1;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
+  margin-right: 12px;
   font-weight: 500;
+  color: #303133;
 }
-/* 核心修复3：结构化展示，移除冗余标签，明确层级 */
-.detail-hierarchy {
-  padding: 12px 0 4px;
+.expand-icon {
+  color: #909399;
+  font-size: 14px;
 }
-.method-section {
-  display: flex;
-  align-items: flex-start;
-  gap: 8px;
+.method-panel {
+  padding: 8px 0 8px 24px; /* 缩进体现层级 */
+  margin-bottom: 12px;
+  background: #fafafa;
+  border-radius: 4px;
 }
-.section-label {
-  font-weight: bold;
-  color: #606266;
-  white-space: nowrap;
-  margin-top: 2px;
+.method-item {
+  padding: 6px 0;
+  border-bottom: 1px dashed #eee;
+}
+.method-item:last-child {
+  border-bottom: none;
+}
+.empty-state {
+  text-align: center;
+  color: #909399;
+  padding: 40px 0;
+  font-size: 14px;
+}
+.slide-fade-enter-active,
+.slide-fade-leave-active {
+  transition: all 0.3s ease;
+}
+.slide-fade-enter-from,
+.slide-fade-leave-to {
+  opacity: 0;
+  transform: translateY(-8px);
 }
 </style>
diff --git a/openhis-ui-vue3/tests/e2e/specs/bug-regression.spec.ts b/openhis-ui-vue3/tests/e2e/specs/bug-regression.spec.ts
index f4f0fdf08..b6b4442f3 100755
--- a/openhis-ui-vue3/tests/e2e/specs/bug-regression.spec.ts
+++ b/openhis-ui-vue3/tests/e2e/specs/bug-regression.spec.ts
@@ -1,39 +1,46 @@
-import { test, expect } from '@playwright/test';
+import { describe, it, cy } from 'cypress';
 
-// ... 原有测试用例 ...
+describe('门诊医生站-检查申请模块回归测试', () => {
+  beforeEach(() => {
+    cy.visit('/outpatient/examination/apply');
+    cy.wait(500);
+  });
 
-// @bug550 @regression
-test('Bug #550: 检查申请项目选择交互优化 - 解耦勾选、卡片显示与层级结构', async ({ page }) => {
-  // 1. 进入门诊医生站-检查申请单
-  await page.goto('/clinic/outpatient/examination');
-  await page.waitForLoadState('networkidle');
+  it('should load examination categories and items correctly', () => {
+    cy.get('.category-tree').should('be.visible');
+    cy.contains('彩超').click();
+    cy.get('.item-list').should('contain', '128线排');
+  });
 
-  // 2. 展开彩超分类并勾选项目
-  await page.click('text=彩超');
-  await page.click('text=128线排');
+  // ... 其他已有测试用例 ...
 
-  // 3. 验证检查方法未被自动勾选（解耦验证）
-  const methodCheckbox = page.locator('.selected-card .method-details .el-checkbox');
-  await expect(methodCheckbox).toHaveCount(0); // 默认收起，无可见勾选框
-  await page.locator('.selected-card .card-header').first().click(); // 展开
-  await expect(methodCheckbox.first()).not.toBeChecked();
+  // @bug550 @regression
+  describe('Bug #550: 检查申请项目选择交互优化', () => {
+    it('should decouple item and method selection, show full names, and render hierarchical details', () => {
+      // 1. 展开彩超分类并勾选项目
+      cy.contains('彩超').click();
+      cy.get('.item-list').contains('128线排').click();
 
-  // 4. 验证已选卡片无“套餐”前缀，且支持完整名称提示
-  const cardName = page.locator('.selected-card .exam-name');
-  await expect(cardName).toHaveText('128线排');
-  await expect(cardName).not.toContainText('套餐');
-  
-  // 验证悬停提示（通过 title 属性或 tooltip）
-  const titleAttr = await cardName.getAttribute('title');
-  expect(titleAttr).toContain('128线排');
+      // 2. 验证检查方法未被自动勾选（解耦）
+      cy.get('.method-list .el-checkbox').should('not.have.class', 'is-checked');
 
-  // 5. 验证默认收起状态与层级结构
-  const methodList = page.locator('.selected-card .method-details');
-  await expect(methodList).toBeVisible(); // 点击后展开
-  await expect(methodList).not.toContainText('项目套餐明细'); // 冗余标签已移除
-  
-  // 验证父子层级：项目 > 检查方法
-  const header = page.locator('.selected-card .card-header');
-  await expect(header).toBeVisible();
-  await expect(methodList).toHaveCSS('padding-left', '24px'); // 缩进体现层级
+      // 3. 验证已选卡片无"套餐"前缀，且支持悬停显示全名
+      cy.get('.selected-card .item-name').should('not.contain', '套餐');
+      cy.get('.selected-card .item-name').trigger('mouseover');
+      cy.get('.el-tooltip__popper').should('contain', '128线排');
+
+      // 4. 验证默认收起状态
+      cy.get('.method-detail-panel').should('not.be.visible');
+
+      // 5. 点击展开，验证层级结构（项目 > 检查方法）
+      cy.get('.selected-card .expand-btn').click();
+      cy.get('.method-detail-panel').should('be.visible');
+      cy.get('.method-item').first().should('have.css', 'padding-left').and('match', /16px|20px/);
+      
+      // 6. 验证可独立勾选检查方法
+      cy.get('.method-item').first().find('.el-checkbox').click();
+      cy.get('.method-item').first().find('.el-checkbox').should('have.class', 'is-checked');
+      cy.get('.selected-card .item-name').parent().find('.el-checkbox').should('not.have.class', 'is-checked');
+    });
+  });
 });