diff --git a/client/src/main/java/com/alibaba/nacos/client/constant/Constants.java b/client/src/main/java/com/alibaba/nacos/client/constant/Constants.java
new file mode 100644
index 000000000..26922657f
--- /dev/null
+++ b/client/src/main/java/com/alibaba/nacos/client/constant/Constants.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.alibaba.nacos.client.constant;
+
+/**
+ * All the constants.
+ *
+ * @author onew
+ */
+public class Constants {
+    
+    public static class SysEnv {
+        
+        public static final String USER_HOME = "user.home";
+        
+        public static final String PROJECT_NAME = "project.name";
+        
+        public static final String JM_LOG_PATH = "JM.LOG.PATH";
+        
+        public static final String JM_SNAPSHOT_PATH = "JM.SNAPSHOT.PATH";
+        
+    }
+    
+    public static class Disk {
+    
+        public static final String READ_ONLY = "r";
+    
+        public static final String READ_WRITE = "rw";
+    }
+    
+    public static class HealthCheck {
+        
+        public static final String UP = "UP";
+        
+        public static final String DOWN = "DOWN";
+    }
+    
+    public static class Protocols {
+        
+        public static final String HTTP = "http://";
+        
+        public static final String HTTPS = "https://";
+    }
+    
+}
diff --git a/client/src/main/java/com/alibaba/nacos/client/logging/AbstractNacosLogging.java b/client/src/main/java/com/alibaba/nacos/client/logging/AbstractNacosLogging.java
index fa7427748..3f71446df 100644
--- a/client/src/main/java/com/alibaba/nacos/client/logging/AbstractNacosLogging.java
+++ b/client/src/main/java/com/alibaba/nacos/client/logging/AbstractNacosLogging.java
@@ -16,6 +16,7 @@
 
 package com.alibaba.nacos.client.logging;
 
+import com.alibaba.nacos.client.constant.Constants;
 import com.alibaba.nacos.common.utils.ConvertUtils;
 import com.alibaba.nacos.common.utils.StringUtils;
 
@@ -33,13 +34,13 @@ public abstract class AbstractNacosLogging {
     
     private static final String NACOS_LOGGING_DEFAULT_CONFIG_ENABLED_PROPERTY = "nacos.logging.default.config.enabled";
     
-    private static final String NACOS_LOGGING_PATH_PROPERTY = "JM.LOG.PATH";
+    private static final String NACOS_LOGGING_PATH_DIR = "logs";
     
     static {
-        String loggingPath = System.getProperty(NACOS_LOGGING_PATH_PROPERTY);
+        String loggingPath = System.getProperty(Constants.SysEnv.JM_LOG_PATH);
         if (StringUtils.isBlank(loggingPath)) {
-            String userHome = System.getProperty("user.home");
-            System.setProperty(NACOS_LOGGING_PATH_PROPERTY, userHome + File.separator + "logs");
+            String userHome = System.getProperty(Constants.SysEnv.USER_HOME);
+            System.setProperty(Constants.SysEnv.JM_LOG_PATH, userHome + File.separator + NACOS_LOGGING_PATH_DIR);
         }
     }