diff --git a/crates/erp-server/src/main.rs b/crates/erp-server/src/main.rs
index 5ac0408..b655b8a 100644
--- a/crates/erp-server/src/main.rs
+++ b/crates/erp-server/src/main.rs
@@ -289,6 +289,12 @@ async fn main() -> anyhow::Result<()> {
                 .map_err(|e| anyhow::anyhow!("Failed to seed auth data: {}", e))?;
 
                 tracing::info!(tenant_id = %new_tenant_id, "Default tenant ready with auth seed data");
+
+                // Seed AI workflow definitions
+                if let Err(e) = erp_workflow::service::ai_workflow_seed::ensure_ai_workflows(&db, new_tenant_id).await {
+                    tracing::warn!(error = %e, "Failed to seed AI workflow definitions");
+                }
+
                 new_tenant_id
             }
         }
diff --git a/crates/erp-workflow/src/service/ai_workflow_seed.rs b/crates/erp-workflow/src/service/ai_workflow_seed.rs
new file mode 100644
index 0000000..c069e37
--- /dev/null
+++ b/crates/erp-workflow/src/service/ai_workflow_seed.rs
@@ -0,0 +1,199 @@
+//! AI 行动闭环 BPMN 流程定义种子数据
+//!
+//! 三条流程：
+//! - ai_followup_workflow — AI 随访建议审批
+//! - ai_appointment_workflow — AI 预约建议审批
+//! - ai_alert_workflow — AI 预警确认
+
+use chrono::Utc;
+use sea_orm::{ActiveModelTrait, ColumnTrait, EntityTrait, QueryFilter, Set};
+use uuid::Uuid;
+
+use crate::entity::process_definition;
+
+/// AI 随访审批流程
+///
+/// ```text
+/// Start → ExclusiveGateway(风险分级)
+///   → [low]    → End (自动执行，由分发器直接处理)
+///   → [medium] → UserTask(医生审批) → ExclusiveGateway → [approved] → End
+///                                                         → [rejected] → End
+///   → [high]   → UserTask(紧急确认) → ExclusiveGateway → [approved] → End
+///                                                         → [rejected] → End
+/// ```
+fn followup_nodes() -> Vec<serde_json::Value> {
+    serde_json::from_value(serde_json::json!([
+        {"id": "start", "type": "StartEvent", "name": "AI 随访建议"},
+        {"id": "gw_risk", "type": "ExclusiveGateway", "name": "风险分级"},
+        {"id": "end_auto", "type": "EndEvent", "name": "自动完成"},
+        {"id": "doctor_review", "type": "UserTask", "name": "医生审批随访建议",
+         "candidate_groups": ["doctor"]},
+        {"id": "gw_outcome", "type": "ExclusiveGateway", "name": "审批结果"},
+        {"id": "end_approved", "type": "EndEvent", "name": "已批准"},
+        {"id": "end_rejected", "type": "EndEvent", "name": "已拒绝"}
+    ])).unwrap()
+}
+
+fn followup_edges() -> Vec<serde_json::Value> {
+    serde_json::from_value(serde_json::json!([
+        {"id": "e1", "source": "start", "target": "gw_risk"},
+        {"id": "e2", "source": "gw_risk", "target": "end_auto",
+         "condition": "risk_level == \"low\"", "label": "低风险"},
+        {"id": "e3", "source": "gw_risk", "target": "doctor_review",
+         "label": "中/高风险"},
+        {"id": "e4", "source": "doctor_review", "target": "gw_outcome"},
+        {"id": "e5", "source": "gw_outcome", "target": "end_approved",
+         "condition": "outcome == \"approved\"", "label": "批准"},
+        {"id": "e6", "source": "gw_outcome", "target": "end_rejected",
+         "condition": "outcome == \"rejected\"", "label": "拒绝"}
+    ])).unwrap()
+}
+
+/// AI 预约审批流程
+fn appointment_nodes() -> Vec<serde_json::Value> {
+    serde_json::from_value(serde_json::json!([
+        {"id": "start", "type": "StartEvent", "name": "AI 预约建议"},
+        {"id": "gw_risk", "type": "ExclusiveGateway", "name": "风险分级"},
+        {"id": "end_auto", "type": "EndEvent", "name": "自动完成"},
+        {"id": "doctor_confirm", "type": "UserTask", "name": "医生确认预约建议",
+         "candidate_groups": ["doctor"]},
+        {"id": "gw_outcome", "type": "ExclusiveGateway", "name": "确认结果"},
+        {"id": "end_approved", "type": "EndEvent", "name": "已确认"},
+        {"id": "end_rejected", "type": "EndEvent", "name": "已拒绝"}
+    ])).unwrap()
+}
+
+fn appointment_edges() -> Vec<serde_json::Value> {
+    serde_json::from_value(serde_json::json!([
+        {"id": "e1", "source": "start", "target": "gw_risk"},
+        {"id": "e2", "source": "gw_risk", "target": "end_auto",
+         "condition": "risk_level == \"low\"", "label": "低风险"},
+        {"id": "e3", "source": "gw_risk", "target": "doctor_confirm",
+         "label": "中/高风险"},
+        {"id": "e4", "source": "doctor_confirm", "target": "gw_outcome"},
+        {"id": "e5", "source": "gw_outcome", "target": "end_approved",
+         "condition": "outcome == \"approved\"", "label": "确认"},
+        {"id": "e6", "source": "gw_outcome", "target": "end_rejected",
+         "condition": "outcome == \"rejected\"", "label": "拒绝"}
+    ])).unwrap()
+}
+
+/// AI 预警确认流程
+fn alert_nodes() -> Vec<serde_json::Value> {
+    serde_json::from_value(serde_json::json!([
+        {"id": "start", "type": "StartEvent", "name": "AI 预警"},
+        {"id": "gw_risk", "type": "ExclusiveGateway", "name": "风险分级"},
+        {"id": "end_auto", "type": "EndEvent", "name": "已发送"},
+        {"id": "doctor_ack", "type": "UserTask", "name": "医生确认预警",
+         "candidate_groups": ["doctor"]},
+        {"id": "gw_outcome", "type": "ExclusiveGateway", "name": "确认结果"},
+        {"id": "end_acknowledged", "type": "EndEvent", "name": "已确认"},
+        {"id": "end_escalated", "type": "EndEvent", "name": "已升级"}
+    ])).unwrap()
+}
+
+fn alert_edges() -> Vec<serde_json::Value> {
+    serde_json::from_value(serde_json::json!([
+        {"id": "e1", "source": "start", "target": "gw_risk"},
+        {"id": "e2", "source": "gw_risk", "target": "end_auto",
+         "condition": "risk_level == \"low\"", "label": "低风险"},
+        {"id": "e3", "source": "gw_risk", "target": "doctor_ack",
+         "label": "中/高风险"},
+        {"id": "e4", "source": "doctor_ack", "target": "gw_outcome"},
+        {"id": "e5", "source": "gw_outcome", "target": "end_acknowledged",
+         "condition": "outcome == \"approved\"", "label": "确认"},
+        {"id": "e6", "source": "gw_outcome", "target": "end_escalated",
+         "condition": "outcome == \"rejected\"", "label": "升级"}
+    ])).unwrap()
+}
+
+struct WorkflowTemplate {
+    key: &'static str,
+    name: &'static str,
+    category: &'static str,
+    description: &'static str,
+    nodes: Vec<serde_json::Value>,
+    edges: Vec<serde_json::Value>,
+}
+
+fn all_templates() -> Vec<WorkflowTemplate> {
+    vec![
+        WorkflowTemplate {
+            key: "ai_followup_workflow",
+            name: "AI 随访建议审批",
+            category: "ai_action",
+            description: "AI 分析生成的随访建议，按风险等级自动执行或提交医生审批",
+            nodes: followup_nodes(),
+            edges: followup_edges(),
+        },
+        WorkflowTemplate {
+            key: "ai_appointment_workflow",
+            name: "AI 预约建议审批",
+            category: "ai_action",
+            description: "AI 分析生成的预约建议，按风险等级自动执行或提交医生确认",
+            nodes: appointment_nodes(),
+            edges: appointment_edges(),
+        },
+        WorkflowTemplate {
+            key: "ai_alert_workflow",
+            name: "AI 预警确认",
+            category: "ai_action",
+            description: "AI 分析生成的预警通知，按风险等级自动发送或提交医生确认",
+            nodes: alert_nodes(),
+            edges: alert_edges(),
+        },
+    ]
+}
+
+/// 确保 AI 行动闭环的工作流定义存在（幂等）。
+///
+/// 对每个 tenant_id 检查 key 是否已存在，不存在则创建并发布。
+pub async fn ensure_ai_workflows(
+    db: &sea_orm::DatabaseConnection,
+    tenant_id: Uuid,
+) -> Result<(), sea_orm::DbErr> {
+    let system_id = Uuid::parse_str("00000000-0000-0000-0000-000000000000").unwrap();
+
+    for tmpl in all_templates() {
+        let exists = process_definition::Entity::find()
+            .filter(process_definition::Column::TenantId.eq(tenant_id))
+            .filter(process_definition::Column::Key.eq(tmpl.key))
+            .filter(process_definition::Column::DeletedAt.is_null())
+            .one(db)
+            .await?
+            .is_some();
+
+        if exists {
+            continue;
+        }
+
+        let now = Utc::now();
+        let id = Uuid::now_v7();
+
+        let active = process_definition::ActiveModel {
+            id: Set(id),
+            tenant_id: Set(tenant_id),
+            name: Set(tmpl.name.to_string()),
+            key: Set(tmpl.key.to_string()),
+            version: Set(1),
+            category: Set(Some(tmpl.category.to_string())),
+            description: Set(Some(tmpl.description.to_string())),
+            nodes: Set(serde_json::json!(tmpl.nodes)),
+            edges: Set(serde_json::json!(tmpl.edges)),
+            status: Set("published".to_string()),
+            created_at: Set(now),
+            updated_at: Set(now),
+            created_by: Set(system_id),
+            updated_by: Set(system_id),
+            deleted_at: Set(None),
+            version_field: Set(1),
+        };
+        active.insert(db).await?;
+        tracing::info!(
+            key = %tmpl.key,
+            tenant_id = %tenant_id,
+            "AI 工作流定义已创建"
+        );
+    }
+    Ok(())
+}
diff --git a/crates/erp-workflow/src/service/mod.rs b/crates/erp-workflow/src/service/mod.rs
index e752f00..838e944 100644
--- a/crates/erp-workflow/src/service/mod.rs
+++ b/crates/erp-workflow/src/service/mod.rs
@@ -1,3 +1,4 @@
+pub mod ai_workflow_seed;
 pub mod definition_service;
 pub mod instance_service;
 pub mod task_service;