diff --git a/healthlink-his-server/healthlink-his-application/src/main/resources/db/migration/V89__knowledge_graph.sql b/healthlink-his-server/healthlink-his-application/src/main/resources/db/migration/V89__knowledge_graph.sql
index df1002d9b..8ad560111 100644
--- a/healthlink-his-server/healthlink-his-application/src/main/resources/db/migration/V89__knowledge_graph.sql
+++ b/healthlink-his-server/healthlink-his-application/src/main/resources/db/migration/V89__knowledge_graph.sql
@@ -1,62 +1,51 @@
--- V89: 知识图谱 - 添加缺失字段 (description, keywords, severityIndicator, sideEffects, clinicalSignificance, evidenceSource, department, required)
+-- V89: 知识图谱 - 添加缺失字段
 
 -- kg_disease: 添加 description, keywords
 DO $$ BEGIN
     ALTER TABLE kg_disease ADD COLUMN IF NOT EXISTS description TEXT;
-EXCEPTION WHEN duplicate_column THEN NULL;
-END $$;
-DO $$ BEGIN
     ALTER TABLE kg_disease ADD COLUMN IF NOT EXISTS keywords VARCHAR(512);
-EXCEPTION WHEN duplicate_column THEN NULL;
+EXCEPTION WHEN undefined_table THEN
+    RAISE NOTICE 'kg_disease table does not exist, skipping';
 END $$;
 
-COMMENT ON COLUMN kg_disease.description IS '疾病描述';
-COMMENT ON COLUMN kg_disease.keywords IS '关键词';
-
 -- kg_symptom: 添加 severity_indicator
 DO $$ BEGIN
     ALTER TABLE kg_symptom ADD COLUMN IF NOT EXISTS severity_indicator VARCHAR(32);
-EXCEPTION WHEN duplicate_column THEN NULL;
+EXCEPTION WHEN undefined_table THEN
+    RAISE NOTICE 'kg_symptom table does not exist, skipping';
 END $$;
 
-COMMENT ON COLUMN kg_symptom.severity_indicator IS '严重程度指标';
-
 -- kg_drug: 添加 side_effects
 DO $$ BEGIN
     ALTER TABLE kg_drug ADD COLUMN IF NOT EXISTS side_effects TEXT;
-EXCEPTION WHEN duplicate_column THEN NULL;
+EXCEPTION WHEN undefined_table THEN
+    RAISE NOTICE 'kg_drug table does not exist, skipping';
 END $$;
 
-COMMENT ON COLUMN kg_drug.side_effects IS '不良反应';
-
 -- kg_examination: 添加 clinical_significance
 DO $$ BEGIN
     ALTER TABLE kg_examination ADD COLUMN IF NOT EXISTS clinical_significance TEXT;
-EXCEPTION WHEN duplicate_column THEN NULL;
+EXCEPTION WHEN undefined_table THEN
+    RAISE NOTICE 'kg_examination table does not exist, skipping';
 END $$;
 
-COMMENT ON COLUMN kg_examination.clinical_significance IS '临床意义';
-
 -- kg_entity_relation: 添加 evidence_source
 DO $$ BEGIN
     ALTER TABLE kg_entity_relation ADD COLUMN IF NOT EXISTS evidence_source VARCHAR(512);
-EXCEPTION WHEN duplicate_column THEN NULL;
+EXCEPTION WHEN undefined_table THEN
+    RAISE NOTICE 'kg_entity_relation table does not exist, skipping';
 END $$;
 
-COMMENT ON COLUMN kg_entity_relation.evidence_source IS '证据来源';
-
 -- kg_clinical_pathway: 添加 department
 DO $$ BEGIN
     ALTER TABLE kg_clinical_pathway ADD COLUMN IF NOT EXISTS department VARCHAR(128);
-EXCEPTION WHEN duplicate_column THEN NULL;
+EXCEPTION WHEN undefined_table THEN
+    RAISE NOTICE 'kg_clinical_pathway table does not exist, skipping';
 END $$;
 
-COMMENT ON COLUMN kg_clinical_pathway.department IS '所属科室';
-
 -- kg_pathway_step: 添加 required
 DO $$ BEGIN
     ALTER TABLE kg_pathway_step ADD COLUMN IF NOT EXISTS required CHAR(1) DEFAULT '1';
-EXCEPTION WHEN duplicate_column THEN NULL;
+EXCEPTION WHEN undefined_table THEN
+    RAISE NOTICE 'kg_pathway_step table does not exist, skipping';
 END $$;
-
-COMMENT ON COLUMN kg_pathway_step.required IS '是否必选(1-是 0-否)';