diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteral.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteral.java
index dba9247fe70213..d1d98fe218afd5 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteral.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteral.java
@@ -19,6 +19,7 @@
 
 import org.apache.doris.nereids.types.DataType;
 
+import java.nio.charset.StandardCharsets;
 import java.util.Objects;
 
 /**
@@ -46,7 +47,7 @@ public double getDouble() {
      * get double value
      */
     public static double getDouble(String str) {
-        byte[] bytes = str.getBytes();
+        byte[] bytes = str.getBytes(StandardCharsets.UTF_8);
         long v = 0;
         int pos = 0;
         int len = Math.min(bytes.length, 7);
diff --git a/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteralTest.java b/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteralTest.java
index c1e9bc0e839b2a..d9724f6b324f60 100644
--- a/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteralTest.java
+++ b/fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/literal/StringLikeLiteralTest.java
@@ -31,4 +31,11 @@ public void testStrToDouble() {
         double d2 = StringLikeLiteral.getDouble(maxStr);
         Assertions.assertTrue(d1 < d2);
     }
+
+    @Test
+    public void testUtf8() {
+        System.setProperty("file.encoding", "ANSI_X3.4-1968");
+        double d1 = StringLikeLiteral.getDouble("一般风险准备");
+        Assertions.assertEquals(d1, 6.4379158486625512E16);
+    }
 }