diff --git a/tester/src/main/java/com/ruoyi/tester/executor/compile/Literal.java b/tester/src/main/java/com/ruoyi/tester/executor/compile/Literal.java
index f9156d67e7f39689ddea8e91c3aeeab5664bee8b..2c6e3b11fcf88ac8ad26c2e2e13bfc802cb91c76 100644
--- a/tester/src/main/java/com/ruoyi/tester/executor/compile/Literal.java
+++ b/tester/src/main/java/com/ruoyi/tester/executor/compile/Literal.java
@@ -18,14 +18,28 @@ public class Literal {
         }
         for (int i=0; i<vn.length(); i++){
             char c = vn.charAt(i);
-            if(!Character.isDigit(c)){
+            if(!chartInDigitSet(c)){
                 return;
             }
         }
-        obj = new BigDecimal(vn);
+        try {
+            obj = new BigDecimal(vn);
+        } catch (Exception e) {
+
+        }
     }
 
     public Object getObj() {
         return obj;
     }
+
+    private static final char[] digitSet = {'0','1','2','3','4','5','6','7','8','9','.','-'};
+    private boolean chartInDigitSet(char c){
+        for (char digit : digitSet) {
+            if (digit == c) {
+                return true;
+            }
+        }
+        return false;
+    }
 }