diff --git a/src/utils/formBuilder.js b/src/utils/formBuilder.js
index 392ede1..5d81148 100644
--- a/src/utils/formBuilder.js
+++ b/src/utils/formBuilder.js
@@ -1544,6 +1544,13 @@ export default function formBuilder(
       let jointlySignContent = [];
       let isJointly = false;
       if (shouldRenderJointlySignContent(info)) this.jointlySignLog.forEach((log) => {
+        // oa_flow_logs.data 是整张表单的快照，可能携带上一个节点已填写的字段。
+        // 只有当前日志所属节点确实拥有该字段的写权限，才可将其视为该节点的签名。
+        const canWriteField = log.node?.fields?.some(
+          (field) => Number(field.field_id) === Number(info.id) && field.type === "write"
+        );
+        if (!canWriteField) return;
+
         const data = JSON.parse(log.data);
         Object.entries(data)?.forEach(([key, value]) => {
           if (
@@ -2765,6 +2772,13 @@ export default function formBuilder(
       let jointlySignContent = [];
       let isJointly = false;
       if (shouldRenderJointlySignContent(info)) this.jointlySignLog.forEach((log) => {
+        // oa_flow_logs.data 是整张表单的快照，可能携带上一个节点已填写的字段。
+        // 只有当前日志所属节点确实拥有该字段的写权限，才可将其视为该节点的签名。
+        const canWriteField = log.node?.fields?.some(
+          (field) => Number(field.field_id) === Number(info.id) && field.type === "write"
+        );
+        if (!canWriteField) return;
+
         const data = JSON.parse(log.data);
         Object.entries(data)?.forEach(([key, value]) => {
           if (