diff --git a/net/server/internal/api_addArticle.go b/net/server/internal/api_addArticle.go
index 4010c7dc..3830f152 100644
--- a/net/server/internal/api_addArticle.go
+++ b/net/server/internal/api_addArticle.go
@@ -25,6 +25,7 @@ func AddArticle(w http.ResponseWriter, r *http.Request) {
   err = store.DB.Transaction(func(tx *gorm.DB) error {
 
     article := &store.Article{}
+    article.AccountID = account.ID
     article.Data = subject.Data
     article.DataType = subject.DataType
     if res := tx.Save(article).Error; res != nil {
diff --git a/net/server/internal/api_addChannel.go b/net/server/internal/api_addChannel.go
index 655bd2d0..32452228 100644
--- a/net/server/internal/api_addChannel.go
+++ b/net/server/internal/api_addChannel.go
@@ -25,6 +25,7 @@ func AddChannel(w http.ResponseWriter, r *http.Request) {
   err = store.DB.Transaction(func(tx *gorm.DB) error {
 
     channel := &store.Channel{}
+    channel.AccountID = account.ID
     channel.Data = subject.Data
     channel.DataType = subject.DataType
     channel.DetailRevision = account.ChannelRevision + 1
diff --git a/net/server/internal/api_addChannelTopic.go b/net/server/internal/api_addChannelTopic.go
index fe828470..7771283b 100644
--- a/net/server/internal/api_addChannelTopic.go
+++ b/net/server/internal/api_addChannelTopic.go
@@ -36,6 +36,7 @@ func AddChannelTopic(w http.ResponseWriter, r *http.Request) {
     }
 
     topic := &store.Topic{}
+    topic.AccountID = act.ID
     topic.ChannelID = channelSlot.Channel.ID
     topic.TopicSlotID = topicSlot.ID
     topic.Data = subject.Data
diff --git a/net/server/internal/api_addChannelTopicTag.go b/net/server/internal/api_addChannelTopicTag.go
index b7194da8..e6b1cc82 100644
--- a/net/server/internal/api_addChannelTopicTag.go
+++ b/net/server/internal/api_addChannelTopicTag.go
@@ -57,6 +57,7 @@ func AddChannelTopicTag(w http.ResponseWriter, r *http.Request) {
     }
 
     tag := &store.Tag{}
+    tag.AccountID = act.ID
     tag.ChannelID = channelSlot.Channel.ID
     tag.TopicID = topicSlot.Topic.ID
     tag.TagSlotID = tagSlot.ID
diff --git a/net/server/internal/api_addGroup.go b/net/server/internal/api_addGroup.go
index ad23e8c7..dd4f7433 100644
--- a/net/server/internal/api_addGroup.go
+++ b/net/server/internal/api_addGroup.go
@@ -26,12 +26,14 @@ func AddGroup(w http.ResponseWriter, r *http.Request) {
 
     data := &store.GroupData{
       Data: subject.Data,
+      AccountID: account.ID,
     }
     if res := tx.Save(data).Error; res != nil {
       return res
     }
 
     group := &store.Group{}
+    group.AccountID = account.ID
     group.GroupDataID = data.ID
     group.DataType = subject.DataType
     if res := tx.Save(group).Error; res != nil {
diff --git a/net/server/internal/api_admin.go b/net/server/internal/api_admin.go
index 72ac8684..f24a7683 100644
--- a/net/server/internal/api_admin.go
+++ b/net/server/internal/api_admin.go
@@ -18,9 +18,5 @@ func ImportAccount(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 }
 
-func RemoveNodeAccount(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
-	w.WriteHeader(http.StatusOK)
-}
 
 
diff --git a/net/server/internal/api_removeNodeAccount.go b/net/server/internal/api_removeNodeAccount.go
new file mode 100644
index 00000000..d597a493
--- /dev/null
+++ b/net/server/internal/api_removeNodeAccount.go
@@ -0,0 +1,108 @@
+package databag
+
+import (
+  "os"
+  "errors"
+  "strconv"
+  "gorm.io/gorm"
+	"net/http"
+  "databag/internal/store"
+  "github.com/gorilla/mux"
+)
+
+func RemoveNodeAccount(w http.ResponseWriter, r *http.Request) {
+
+  // get referenced account id
+  params := mux.Vars(r)
+  accountId, res := strconv.ParseUint(params["accountId"], 10, 32)
+  if res != nil {
+    ErrResponse(w, http.StatusBadRequest, res)
+    return
+  }
+
+  if err := AdminLogin(r); err != nil {
+    ErrResponse(w, http.StatusUnauthorized, err)
+    return
+  }
+
+  var account store.Account
+  if err := store.DB.First(&account, accountId).Error; err != nil {
+    if errors.Is(err, gorm.ErrRecordNotFound) {
+      ErrResponse(w, http.StatusNotFound, err)
+    } else {
+      ErrResponse(w, http.StatusInternalServerError, err)
+    }
+    return
+  }
+
+  err := store.DB.Transaction(func(tx *gorm.DB) error {
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Tag{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.TagSlot{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Asset{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Topic{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.TopicSlot{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.ChannelSlot{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Channel{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Article{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.ArticleSlot{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.CardSlot{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Card{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Group{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.GroupData{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Group{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.App{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.AccountDetail{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.Account{}).Error; res != nil {
+      return res
+    }
+    if res := tx.Where("account_id = ?", accountId).Delete(&store.AccountToken{}).Error; res != nil {
+      return res
+    }
+    return nil
+  })
+  if err != nil {
+    ErrResponse(w, http.StatusInternalServerError, err)
+    return
+  }
+
+  // delete asset files
+  path := getStrConfigValue(CONFIG_ASSETPATH, ".") + "/" + account.Guid
+  if err = os.RemoveAll(path); err != nil {
+    ErrMsg(err)
+  }
+
+  WriteResponse(w, nil)
+}
+
diff --git a/net/server/internal/store/schema.go b/net/server/internal/store/schema.go
index d8444cd5..b64fa7af 100644
--- a/net/server/internal/store/schema.go
+++ b/net/server/internal/store/schema.go
@@ -110,6 +110,7 @@ type GroupSlot struct {
 type Group struct {
   ID                uint            `gorm:"primaryKey;not null;unique;autoIncrement"`
   GroupDataID       uint            `gorm:"not null;index:groupdata"`
+  AccountID         uint
   DataType          string          `gorm:"index"`
   Created           int64           `gorm:"autoCreateTime"`
   Updated           int64           `gorm:"autoUpdateTime"`
@@ -123,6 +124,7 @@ type Group struct {
 type GroupData struct {
   ID                uint            `gorm:"primaryKey;not null;unique;autoIncrement"`
   Data              string
+  AccountID         uint
 }
 
 type CardSlot struct {
@@ -177,6 +179,7 @@ type ArticleSlot struct {
 
 type Article struct {
   ID                uint            `gorm:"primaryKey;not null;unique;autoIncrement"`
+  AccountID         uint
   DataType          string          `gorm:"index"`
   Data              string
   Created           int64           `gorm:"autoCreateTime"`
@@ -197,6 +200,7 @@ type ChannelSlot struct {
 
 type Channel struct {
   ID                uint            `gorm:"primaryKey;not null;unique;autoIncrement"`
+  AccountID         uint
   TopicRevision     int64           `gorm:"not null"`
   DetailRevision    int64           `gorm:"not null"`
   DataType          string          `gorm:"index"`
@@ -223,6 +227,7 @@ type TopicSlot struct {
 type Topic struct {
   ID                uint            `gorm:"primaryKey;not null;unique;autoIncrement"`
   DetailRevision    int64           `gorm:"not null"`
+  AccountID         uint
   ChannelID         uint
   TopicSlotID       uint            `gorm:"not null;index:topictopicslot,unique"`
   Guid              string
@@ -274,6 +279,7 @@ type TagSlot struct {
 type Tag struct {
   ID                uint            `gorm:"primaryKey;not null;unique;autoIncrement"`
   TagSlotID         uint            `gorm:"not null;index:tagtagslot,unique"`
+  AccountID         uint
   ChannelID         uint            `gorm:"not null;index:channeltag"`
   TopicID           uint            `gorm:"not null;index:topictag"`
   Guid              string          `gorm:"not null"`