diff --git a/core/billing.coffee b/core/billing.coffee
index c7001fa..8c45790 100644
--- a/core/billing.coffee
+++ b/core/billing.coffee
@@ -43,7 +43,7 @@ exports.triggerBilling = (account, callback) ->
     return false
 
   async.each account.billing.plans, (plan_name, callback) ->
-    exports.generateBilling account, plan_name, is_force, (result) ->
+    exports.generateBilling account, plan_name, {is_force: is_force}, (result) ->
       callback null, result
 
   , (err, result) ->
@@ -77,7 +77,8 @@ exports.triggerBilling = (account, callback) ->
         else
           callback account
 
-exports.generateBilling = (account, plan_name, is_force, callback) ->
+exports.generateBilling = (account, plan_name, options, callback) ->
+  {is_force} = options
   plan_info = config.plans[plan_name]
 
   unless plan_info.billing_by_time
diff --git a/core/cache.coffee b/core/cache.coffee
new file mode 100644
index 0000000..e69de29
diff --git a/core/router/billing.coffee b/core/router/billing.coffee
index 365e682..6e971ce 100644
--- a/core/router/billing.coffee
+++ b/core/router/billing.coffee
@@ -12,25 +12,22 @@ exports.post '/join_plan', requireAuthenticate, (req, res) ->
   unless req.body.plan in _.keys(config.plans)
     return res.error 'invaild_plan'
 
-  if req.body.plan in req.account.attribute.plans
+  if req.body.plan in req.account.billing.plans
     return res.error 'already_in_plan'
 
   plan_info = config.plans[req.body.plan]
 
-  billing.calcBilling req.account, true, (account) ->
-    if plan_info.price and account.attribute.balance <= 0
+  billing.triggerBilling req.account, (account) ->
+    if account.billing.balance < config.billing.force_freeze.when_balance_below
       return res.error 'insufficient_balance'
 
-    if account.attribute.balance < 0
-      return res.error 'insufficient_balance'
-
-    plan.joinPlan account, req.body.plan, ->
+    billing.joinPlan account, req.body.plan, ->
       res.json {}
 
 exports.post '/leave_plan', requireAuthenticate, (req, res) ->
-  unless req.body.plan in req.account.attribute.plans
+  unless req.body.plan in req.account.billing.plans
     return res.error 'not_in_plan'
 
-  billing.calcBilling req.account, true, (account) ->
-    plan.leavePlan account, req.body.plan, ->
+  billing.generateBilling req.account, req.body.plan, {is_force: true}, (account) ->
+    billing.leavePlan account, req.body.plan, ->
       res.json {}
diff --git a/core/static/script/panel.coffee b/core/static/script/panel.coffee
index 9a6346d..f38ef81 100644
--- a/core/static/script/panel.coffee
+++ b/core/static/script/panel.coffee
@@ -11,25 +11,15 @@ $ ->
     .success ->
       location.reload()
 
-  $('.plan-list .btn-danger').click ->
+  $('.action-leave-plan').click ->
     if window.confirm 'Are you sure?'
-      $.post "/plan/unsubscribe/", JSON.stringify
+      request '/billing/leave_plan/',
         plan: $(@).parents('tr').data 'name'
-      .fail (jqXHR) ->
-        if jqXHR.responseJSON?.error
-          alert jqXHR.responseJSON.error
-        else
-          alert jqXHR.statusText
-      .success ->
+      , (result) ->
         location.reload()
 
-  $('.plan-list .btn-success').click ->
-    $.post "/plan/subscribe/", JSON.stringify
+  $('.action-join-plan').click ->
+    request '/billing/join_plan/',
       plan: $(@).parents('tr').data 'name'
-    .fail (jqXHR) ->
-      if jqXHR.responseJSON?.error
-        alert jqXHR.responseJSON.error
-      else
-        alert jqXHR.statusText
-    .success ->
+    , (result) ->
       location.reload()
diff --git a/core/view/panel.jade b/core/view/panel.jade
index ab5d3e0..e4553ec 100644
--- a/core/view/panel.jade
+++ b/core/view/panel.jade
@@ -26,9 +26,9 @@ block main
             td= t(plan.t_description)
             td
               if plan.is_enable
-                button.btn.btn-danger.btn-sm 退订方案
+                button.action-join-plan.btn.btn-danger.btn-sm 退订方案
               else
-                button.btn.btn-success.btn-sm 订购方案
+                button.action-leave-plan.btn.btn-success.btn-sm 订购方案
 
   if selectHook('view.panel.switch_buttons').length
     #service-switch.row