diff --git a/src/main/java/racal/sunyard/main/SydApi4j.java b/src/main/java/racal/sunyard/main/SydApi4j.java
index 884ef30..0bf4c76 100644
--- a/src/main/java/racal/sunyard/main/SydApi4j.java
+++ b/src/main/java/racal/sunyard/main/SydApi4j.java
@@ -1049,11 +1049,9 @@ public class SydApi4j implements SydApi {
 
     }
 
-    // 测试通过
-    @Override
-    public boolean detachedVerify(int dataType, byte[] orgData, String sign) {
+    public boolean detachedVerify(int dataType, byte[] orgData, String sign, Boolean checkCert) {
         Proto8006 proto = new Proto8006();
-            // 填充数据
+        // 填充数据
         HashMap<String, Object> packet = new HashMap<String, Object>();
         PacketSN sn = PacketSN.gen();
 
@@ -1071,7 +1069,7 @@ public class SydApi4j implements SydApi {
 
 
         data.put("signData", sign.getBytes());
-        data.put("flag$option", 0);
+        data.put("flag$option", checkCert ? 1 : 0);
         // 渲染发送
         ByteBuffer bb = proto.rend(packet);
 
@@ -1102,6 +1100,12 @@ public class SydApi4j implements SydApi {
         return true;
     }
 
+    // 测试通过
+    @Override
+    public boolean detachedVerify(int dataType, byte[] orgData, String sign) {
+        return detachedVerify(dataType, orgData, sign, false);
+    }
+
     public boolean detachedVerifyAll(int rFlag,byte[] orgData, String sign){
         try {
             boolean sm2Cert = CertUtil.isSignedBySM2Cert(sign);
@@ -12120,7 +12124,7 @@ public class SydApi4j implements SydApi {
         byte[] pk = (byte[]) ret.get("pk");
         byte[] hash = this.SM3Hash(Util.bytes2HexString(pk), orgData);
         String sign2 = (String) ret.get("sign");
-        boolean pass = this.detachedVerify(0, hash, sign2);
+        boolean pass = this.detachedVerify(0, hash, sign2, true);
         if (pass) {
             ret.put("oData", orgData);
             String certInfo = (String) ret.get("cert");