diff --git a/sdk-core/src/main/java/org/fisco/bcos/sdk/config/model/CryptoMaterialConfig.java b/sdk-core/src/main/java/org/fisco/bcos/sdk/config/model/CryptoMaterialConfig.java
index b4377eacd..92bd4c0e9 100644
--- a/sdk-core/src/main/java/org/fisco/bcos/sdk/config/model/CryptoMaterialConfig.java
+++ b/sdk-core/src/main/java/org/fisco/bcos/sdk/config/model/CryptoMaterialConfig.java
@@ -15,7 +15,6 @@
 
 package org.fisco.bcos.sdk.config.model;
 
-import java.io.File;
 import java.util.Map;
 import org.fisco.bcos.sdk.config.exceptions.ConfigException;
 import org.fisco.bcos.sdk.model.CryptoType;
@@ -124,20 +123,15 @@ public CryptoMaterialConfig getDefaultCaCertPath(int cryptoType, String certPath
         CryptoMaterialConfig cryptoMaterialConfig = new CryptoMaterialConfig();
         cryptoMaterialConfig.setCertPath(certPath);
         if (cryptoType == CryptoType.ECDSA_TYPE) {
-            cryptoMaterialConfig.setCaCertPath(certPath + File.separator + "ca.crt");
-            cryptoMaterialConfig.setSdkCertPath(certPath + File.separator + "sdk.crt");
-            cryptoMaterialConfig.setSdkPrivateKeyPath(certPath + File.separator + "sdk.key");
+            cryptoMaterialConfig.setCaCertPath(certPath + "/" + "ca.crt");
+            cryptoMaterialConfig.setSdkCertPath(certPath + "/" + "sdk.crt");
+            cryptoMaterialConfig.setSdkPrivateKeyPath(certPath + "/" + "sdk.key");
         } else if (cryptoType == CryptoType.SM_TYPE) {
-            cryptoMaterialConfig.setCaCertPath(
-                    certPath + File.separator + File.separator + "sm_ca.crt");
-            cryptoMaterialConfig.setSdkCertPath(
-                    certPath + File.separator + File.separator + "sm_sdk.crt");
-            cryptoMaterialConfig.setSdkPrivateKeyPath(
-                    certPath + File.separator + File.separator + "sm_sdk.key");
-            cryptoMaterialConfig.setEnSdkCertPath(
-                    certPath + File.separator + File.separator + "sm_ensdk.crt");
-            cryptoMaterialConfig.setEnSdkPrivateKeyPath(
-                    certPath + File.separator + File.separator + "sm_ensdk.key");
+            cryptoMaterialConfig.setCaCertPath(certPath + "/" + "sm_ca.crt");
+            cryptoMaterialConfig.setSdkCertPath(certPath + "/" + "sm_sdk.crt");
+            cryptoMaterialConfig.setSdkPrivateKeyPath(certPath + "/" + "sm_sdk.key");
+            cryptoMaterialConfig.setEnSdkCertPath(certPath + "/" + "sm_ensdk.crt");
+            cryptoMaterialConfig.setEnSdkPrivateKeyPath(certPath + "/" + "sm_ensdk.key");
         } else {
             throw new ConfigException(
                     "load CryptoMaterialConfig failed, only support ecdsa and sm now, expected 0 or 1, but provided "
diff --git a/sdk-crypto/src/main/java/org/fisco/bcos/sdk/crypto/keypair/CryptoKeyPair.java b/sdk-crypto/src/main/java/org/fisco/bcos/sdk/crypto/keypair/CryptoKeyPair.java
index 7e8e689f6..d3645fb34 100644
--- a/sdk-crypto/src/main/java/org/fisco/bcos/sdk/crypto/keypair/CryptoKeyPair.java
+++ b/sdk-crypto/src/main/java/org/fisco/bcos/sdk/crypto/keypair/CryptoKeyPair.java
@@ -301,7 +301,7 @@ protected String getKeyStoreFilePath(String address, String postFix) {
         if (config != null) {
             keyStoreFileDir = config.getAccountConfig().getKeyStoreDir();
         }
-        keyStoreFileDir = keyStoreFileDir + File.separator + keyStoreSubDir + File.separator;
+        keyStoreFileDir = keyStoreFileDir + "/" + keyStoreSubDir + "/";
         return keyStoreFileDir + address + postFix;
     }
 }
diff --git a/sdk-crypto/src/test/java/org/fisco/bcos/sdk/crypto/SignatureTest.java b/sdk-crypto/src/test/java/org/fisco/bcos/sdk/crypto/SignatureTest.java
index e43eb8430..ce91c571f 100644
--- a/sdk-crypto/src/test/java/org/fisco/bcos/sdk/crypto/SignatureTest.java
+++ b/sdk-crypto/src/test/java/org/fisco/bcos/sdk/crypto/SignatureTest.java
@@ -426,9 +426,9 @@ public void testSignAndVerifyWithKeyManager() {
     public String getKeyStoreFilePath(
             CryptoSuite cryptoSuite, ConfigOption configOption, String postFix) {
         return configOption.getAccountConfig().getKeyStoreDir()
-                + File.separator
+                + "/"
                 + cryptoSuite.getCryptoKeyPair().getKeyStoreSubDir()
-                + File.separator
+                + "/"
                 + cryptoSuite.getCryptoKeyPair().getAddress()
                 + postFix;
     }