diff --git a/src/main/java/org/ntlab/citrusserver/entities/Account.java b/src/main/java/org/ntlab/citrusserver/entities/Account.java
index 37cbba8..0567713 100644
--- a/src/main/java/org/ntlab/citrusserver/entities/Account.java
+++ b/src/main/java/org/ntlab/citrusserver/entities/Account.java
@@ -1,9 +1,14 @@
 package org.ntlab.citrusserver.entities;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
 public class Account {
     private String introduction;
+    @JsonIgnore
     private int bookcount = 0;
+    @JsonIgnore
     private String accountId;
+    @JsonIgnore
     private String password;
 
     public Account(String aid, String pass) {
@@ -13,12 +18,16 @@
 
     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;}
+    @JsonIgnore
     public String getId() {return accountId;}
     public void setPassword(String p) {password = p;}
     public String getPassword() {return password;}