diff --git a/openhis-server-new/openhis-application/src/main/java/com/openhis/web/doctorstation/dto/DiagnosisQueryDto.java b/openhis-server-new/openhis-application/src/main/java/com/openhis/web/doctorstation/dto/DiagnosisQueryDto.java
index 9d0c94596..97dd2a175 100755
--- a/openhis-server-new/openhis-application/src/main/java/com/openhis/web/doctorstation/dto/DiagnosisQueryDto.java
+++ b/openhis-server-new/openhis-application/src/main/java/com/openhis/web/doctorstation/dto/DiagnosisQueryDto.java
@@ -96,4 +96,9 @@ public class DiagnosisQueryDto {
      */
     private String diagnosisDoctor;
 
+    /**
+     * 是否已有传染病报卡（0-无，1-有）
+     */
+    private Integer hasInfectiousReport;
+
 }
diff --git a/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationDiagnosisAppMapper.xml b/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationDiagnosisAppMapper.xml
index bad78f219..9289a857d 100755
--- a/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationDiagnosisAppMapper.xml
+++ b/openhis-server-new/openhis-application/src/main/resources/mapper/doctorstation/DoctorStationDiagnosisAppMapper.xml
@@ -134,7 +134,11 @@
                T2.yb_no,
                T1.onset_date AS onsetDate,
                T1.diagnosis_time AS diagnosisTime,
-               T1.doctor AS diagnosisDoctor
+               T1.doctor AS diagnosisDoctor,
+               CASE WHEN EXISTS (
+                   SELECT 1 FROM infectious_card T4
+                   WHERE T4.diag_id = T2.id AND T4.delete_flag = '0' AND T4.status >= 1
+               ) THEN 1 ELSE 0 END AS hasInfectiousReport
         FROM adm_encounter_diagnosis AS T1
                  LEFT JOIN cli_condition AS T2 ON T2.ID = T1.condition_id
             AND T2.delete_flag = '0' AND T2.tcm_flag = 0
diff --git a/openhis-ui-vue3/src/views/doctorstation/components/diagnosis/diagnosis.vue b/openhis-ui-vue3/src/views/doctorstation/components/diagnosis/diagnosis.vue
index 13248f8a1..0365b8802 100755
--- a/openhis-ui-vue3/src/views/doctorstation/components/diagnosis/diagnosis.vue
+++ b/openhis-ui-vue3/src/views/doctorstation/components/diagnosis/diagnosis.vue
@@ -692,6 +692,7 @@ async function handleFoodDiseasesCheck() {
 /**
  * 传染病报告卡处理
  * 通过诊断名称自动识别并勾选传染病报告卡中的疾病
+ * 修复 Bug #519：跳过已有已提交报卡的诊断
  */
 function handleInfectiousDiseaseReport() {
   // 疾病名称到报卡编码的映射（根据传染病报告卡弹窗中的疾病列表）
@@ -743,8 +744,9 @@ function handleInfectiousDiseaseReport() {
     '手足口病': '0311',
   };
 
-  // 获取所有诊断名称对应的报卡编码
+  // 获取所有诊断名称对应的报卡编码，但跳过已有已提交报卡的诊断
   const allSelectedDiseases = form.value.diagnosisList
+    .filter(d => d.name && d.hasInfectiousReport !== 1)
     .map(d => diseaseNameToCode[d.name] || null)
     .filter(code => code);
 
@@ -752,9 +754,9 @@ function handleInfectiousDiseaseReport() {
     return;
   }
 
-  // 优先使用主诊断
-  const mainDiagnosis = form.value.diagnosisList.find(d => d.maindiseFlag === 1);
-  const firstDiagnosis = form.value.diagnosisList[0];
+  // 优先使用主诊断（同样跳过已有报卡的）
+  const mainDiagnosis = form.value.diagnosisList.find(d => d.maindiseFlag === 1 && d.hasInfectiousReport !== 1);
+  const firstDiagnosis = form.value.diagnosisList.find(d => d.hasInfectiousReport !== 1) || form.value.diagnosisList[0];
 
   const diagnosisToShow = {
     ...(mainDiagnosis || firstDiagnosis),