diff --git a/hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/HugeGraphHubble.java b/hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/HugeGraphHubble.java
index 5e25ed8c5..e0c208279 100644
--- a/hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/HugeGraphHubble.java
+++ b/hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/HugeGraphHubble.java
@@ -27,6 +27,9 @@
 import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
 import org.springframework.scheduling.annotation.EnableScheduling;
 
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+
 @SpringBootApplication
 @EnableScheduling
 @MapperScan("org.apache.hugegraph.mapper")
@@ -38,6 +41,8 @@ public static void main(String[] args) {
     }
 
     public static void initEnv() {
+        Ex.check(Charset.defaultCharset().equals(StandardCharsets.UTF_8),
+                "Charset must be UTF-8, current:" + Charset.defaultCharset());
         String hubbleHomePath = System.getProperty("hubble.home.path");
         Ex.check(StringUtils.isNotEmpty(hubbleHomePath),
                  "The system property 'hubble.home.path' must be set");
diff --git a/hugegraph-hubble/hubble-dist/assembly/static/bin/start-hubble.sh b/hugegraph-hubble/hubble-dist/assembly/static/bin/start-hubble.sh
index 2626e0a5d..cecdb2435 100644
--- a/hugegraph-hubble/hubble-dist/assembly/static/bin/start-hubble.sh
+++ b/hugegraph-hubble/hubble-dist/assembly/static/bin/start-hubble.sh
@@ -42,7 +42,7 @@ for jar in "${LIB_PATH}"/*.jar; do
     class_path=${class_path}:${jar}
 done
 
-JAVA_OPTS="-Xms512m"
+JAVA_OPTS="-Xms512m -Dfile.encoding=UTF-8"
 JAVA_DEBUG_OPTS=""
 FOREGROUND="false"
 
diff --git a/hugegraph-hubble/hubble-dist/assembly/travis/download-hugegraph.sh b/hugegraph-hubble/hubble-dist/assembly/travis/download-hugegraph.sh
index ac4cf585c..7e9c40eb4 100755
--- a/hugegraph-hubble/hubble-dist/assembly/travis/download-hugegraph.sh
+++ b/hugegraph-hubble/hubble-dist/assembly/travis/download-hugegraph.sh
@@ -15,6 +15,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 #
+export LANG=zh_CN.UTF-8
 set -ev
 
 if [[ $# -ne 1 ]]; then
diff --git a/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph-hubble.sh b/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph-hubble.sh
index 53f37f708..674274560 100755
--- a/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph-hubble.sh
+++ b/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph-hubble.sh
@@ -15,6 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+export LANG=zh_CN.UTF-8
 set -ev
 
 TRAVIS_DIR=$(dirname "$0")
diff --git a/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph.sh b/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph.sh
index 1b2eb1ba5..920968c00 100755
--- a/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph.sh
+++ b/hugegraph-hubble/hubble-dist/assembly/travis/install-hugegraph.sh
@@ -15,6 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+export LANG=zh_CN.UTF-8
 set -ev
 
 COMMIT_ID=$1
diff --git a/hugegraph-hubble/hubble-dist/assembly/travis/run-api-test.sh b/hugegraph-hubble/hubble-dist/assembly/travis/run-api-test.sh
index 67000fad7..9be2b3227 100755
--- a/hugegraph-hubble/hubble-dist/assembly/travis/run-api-test.sh
+++ b/hugegraph-hubble/hubble-dist/assembly/travis/run-api-test.sh
@@ -15,6 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+export LANG=zh_CN.UTF-8
 set -ev
 
 TRAVIS_DIR="hubble-dist/assembly/travis"
diff --git a/hugegraph-hubble/hubble-dist/assembly/travis/start-hubble.sh b/hugegraph-hubble/hubble-dist/assembly/travis/start-hubble.sh
index a806a0f60..efbfbd339 100644
--- a/hugegraph-hubble/hubble-dist/assembly/travis/start-hubble.sh
+++ b/hugegraph-hubble/hubble-dist/assembly/travis/start-hubble.sh
@@ -80,7 +80,7 @@ args=${CONF_PATH}/hugegraph-hubble.properties
 log=${LOG_PATH}/hugegraph-hubble.log
 
 echo -n "starting HugeGraphHubble "
-nohup nice -n 0 java -server "${java_opts}" "${agent_opts}" -Dhubble.home.path="${HOME_PATH}" -cp "${class_path}" ${main_class} "${args}" > "${log}" 2>&1 < /dev/null &
+nohup nice -n 0 java -server -Dfile.encoding=UTF-8 "${java_opts}" "${agent_opts}" -Dhubble.home.path="${HOME_PATH}" -cp "${class_path}" ${main_class} "${args}" > "${log}" 2>&1 < /dev/null &
 pid=$!
 echo ${pid} > "${PID_FILE}"