diff --git a/esua-epdc/epdc-commons/epdc-commons-tools/src/main/java/com/elink/esua/epdc/commons/tools/constant/NumConstant.java b/esua-epdc/epdc-commons/epdc-commons-tools/src/main/java/com/elink/esua/epdc/commons/tools/constant/NumConstant.java
index 110c2b089..4c4865263 100644
--- a/esua-epdc/epdc-commons/epdc-commons-tools/src/main/java/com/elink/esua/epdc/commons/tools/constant/NumConstant.java
+++ b/esua-epdc/epdc-commons/epdc-commons-tools/src/main/java/com/elink/esua/epdc/commons/tools/constant/NumConstant.java
@@ -16,6 +16,9 @@ public interface NumConstant {
     int FOUR = 4;
     int SIX = 6;
 
+    int ONE_NEG = -1;
+    int TWO_NEG = -2;
+
     int TEN = 10;
     int FIFTEEN = 15;
     int TWENTY = 20;