diff --git a/src/main/java/org/ntlab/citrusserver/entities/Account.java b/src/main/java/org/ntlab/citrusserver/entities/Account.java
index 1e2486d..b42a8c8 100644
--- a/src/main/java/org/ntlab/citrusserver/entities/Account.java
+++ b/src/main/java/org/ntlab/citrusserver/entities/Account.java
@@ -17,10 +17,12 @@
 
     public void setIntroduction(String i) {introduction = i;}
     public String getIntroduction() {return introduction;}
+    @JsonIgnore
     public int getNewBookId() {
         bookcount += 1;
         return bookcount;
     }
+    @JsonIgnore
     public int getBookCount() {return bookcount;}
     public void setId(String i) {accountId = i;}
     public String getId() {return accountId;}