diff --git a/src/api/identity_binding.rs b/src/api/identity_binding.rs
index 2a3a9cd..a2c0861 100644
--- a/src/api/identity_binding.rs
+++ b/src/api/identity_binding.rs
@@ -9,7 +9,8 @@ use serde::{Deserialize, Serialize};
 
 use crate::core::db::{Database, PostgresDb};
 use crate::core::person_identity::{
-    BindIdentityRequest, Identity, MergeIdentitiesRequest, UnbindIdentityRequest,
+    BindIdentityRequest, BindIdentityTraceRequest, Identity, MergeIdentitiesRequest,
+    UnbindIdentityRequest,
 };
 
 #[derive(Debug, Clone, Serialize)]
@@ -388,6 +389,80 @@ pub struct TracesQuery {
     pub page_size: Option<usize>,
 }
 
+pub async fn bind_identity_trace(
+    Path(identity_uuid): Path<String>,
+    Json(req): Json<BindIdentityTraceRequest>,
+) -> Result<Json<ApiResponse<serde_json::Value>>, (StatusCode, Json<serde_json::Value>)> {
+    let fd_table = crate::core::db::schema::table_name("face_detections");
+    let id_table = crate::core::db::schema::table_name("identities");
+
+    let db = sqlx::PgPool::connect(&crate::core::config::DATABASE_URL)
+        .await
+        .map_err(|e| {
+            (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                Json(serde_json::json!({"error": e.to_string()})),
+            )
+        })?;
+
+    let identity_row: Option<(i64, String)> = sqlx::query_as(&format!(
+        "SELECT id::bigint, name FROM {} WHERE uuid = $1::uuid",
+        id_table
+    ))
+    .bind(&identity_uuid)
+    .fetch_optional(&db)
+    .await
+    .map_err(|e| {
+        (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            Json(serde_json::json!({"error": format!("DB error: {}", e)})),
+        )
+    })?;
+
+    let (identity_id, name) = identity_row.ok_or_else(|| {
+        (
+            StatusCode::NOT_FOUND,
+            Json(serde_json::json!({"error": format!("Identity not found: {}", identity_uuid)})),
+        )
+    })?;
+
+    let result = sqlx::query(&format!(
+        "UPDATE {} SET identity_id = $1 WHERE file_uuid = $2 AND trace_id = $3",
+        fd_table
+    ))
+    .bind(identity_id)
+    .bind(&req.file_uuid)
+    .bind(req.trace_id)
+    .execute(&db)
+    .await
+    .map_err(|e| {
+        (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            Json(serde_json::json!({"error": format!("Update failed: {}", e)})),
+        )
+    })?;
+
+    let uuid_clean = identity_uuid.replace('-', "");
+    if let Err(e) =
+        crate::core::identity::storage::save_identity_file_by_pool(&db, &uuid_clean).await
+    {
+        tracing::warn!(
+            "[bind/trace] Failed to sync identity file for {}: {}",
+            uuid_clean,
+            e
+        );
+    }
+
+    Ok(Json(ApiResponse {
+        success: true,
+        message: format!(
+            "Bound trace {} of {} to {}",
+            req.trace_id, req.file_uuid, name
+        ),
+        data: Some(serde_json::json!({"rows_affected": result.rows_affected()})),
+    }))
+}
+
 pub async fn get_identity_traces(
     State(state): State<crate::api::types::AppState>,
     Path(identity_uuid): Path<String>,
@@ -488,6 +563,10 @@ pub async fn get_identity_traces(
 pub fn identity_binding_routes() -> Router<crate::api::types::AppState> {
     Router::new()
         .route("/api/v1/identity/:identity_uuid/bind", post(bind_identity))
+        .route(
+            "/api/v1/identity/:identity_uuid/bind/trace",
+            post(bind_identity_trace),
+        )
         .route(
             "/api/v1/identity/:identity_uuid/unbind",
             post(unbind_identity),
diff --git a/src/core/person_identity.rs b/src/core/person_identity.rs
index c324087..a802f6d 100644
--- a/src/core/person_identity.rs
+++ b/src/core/person_identity.rs
@@ -72,6 +72,12 @@ pub struct BindIdentityRequest {
     pub face_id: String,
 }
 
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct BindIdentityTraceRequest {
+    pub file_uuid: String,
+    pub trace_id: i32,
+}
+
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct UnbindIdentityRequest {
     pub file_uuid: String,