diff --git a/src/main/java/com/sunyard/inf/SydCertApi.java b/src/main/java/com/sunyard/inf/SydCertApi.java
index 3d523e9..36f8ba3 100644
--- a/src/main/java/com/sunyard/inf/SydCertApi.java
+++ b/src/main/java/com/sunyard/inf/SydCertApi.java
@@ -6,6 +6,7 @@ import com.sunyard.cert.X509;
 import com.sunyard.constant.CertUsage;
 
 import java.io.UnsupportedEncodingException;
+import java.util.List;
 
 /**
  * 证书操作相关接口
@@ -102,6 +103,14 @@ public interface SydCertApi {
             String sign
     );
 
+
+    /**
+     * 查询所有证书
+     * @return
+     *    certDNs: 证书DN
+     */
+    List<String> getAllCert() throws UnsupportedEncodingException;
+
     /**
      * 查询所有证书
      * @param dataFlag 数据包标志 0：起始包 1：中间包 2：结束包
diff --git a/src/main/java/racal/sunyard/main/SydApi4j.java b/src/main/java/racal/sunyard/main/SydApi4j.java
index ab4902f..0fcc4df 100644
--- a/src/main/java/racal/sunyard/main/SydApi4j.java
+++ b/src/main/java/racal/sunyard/main/SydApi4j.java
@@ -1321,6 +1321,25 @@ public class SydApi4j implements SydApi {
 
         return r;
     }
+
+
+    @Override
+    public List<String> getAllCert() throws UnsupportedEncodingException {
+
+        ArrayList<String> m_certs =new ArrayList<String>();
+        //查出证书总数，一次次的拿出来
+        RetWrap allCert =getAllCert(0);
+        Integer allnum =(Integer) allCert.get("certAllNum");//总数
+        List<String> certs = (List<String>)allCert.get("certDNs");//部分证书列表
+        m_certs.addAll(certs);
+        int loop = allnum%16;//循环次数
+        for (int i = 1; i < loop; i++) {
+            RetWrap partCert= getAllCert(16*i);
+            List<String> partcerts = (List<String>)partCert.get("certDNs");
+            m_certs.addAll(partcerts);
+        }
+        return m_certs;
+    }
     
     // 测试通过
     @Override
diff --git a/src/test/java/sample/Shanghairenhang.java b/src/test/java/sample/Shanghairenhang.java
index 43feadf..f1f9d7c 100644
--- a/src/test/java/sample/Shanghairenhang.java
+++ b/src/test/java/sample/Shanghairenhang.java
@@ -92,10 +92,17 @@ public class Shanghairenhang {
         System.out.println(Util.bytes2HexString(bytes));
     }
     @Test
-    public void aboutCert(){
+    public void aboutCert() throws UnsupportedEncodingException {
         //System.setProperty("com.sunyard.sydapi4j.debug", "true");
-        SydApiBuilder builder = new SydApiBuilder().setIp("192.168.0.200");
+        SydApiBuilder builder = new SydApiBuilder().setIp("192.168.1.129");
         SydApi4j api = (SydApi4j) builder.build();
+        RetWrap allCert = api.getAllCert(0);
+        printRetWrap(allCert);
+
+        List<String> certs= api.getAllCert();
+        System.out.println("所有证书"+certs);
+        System.out.println(certs.size());
+
 
     }