diff --git a/app/models/adding_positions_history.rb b/app/models/adding_positions_history.rb
index 1f1a7b9..8306311 100644
--- a/app/models/adding_positions_history.rb
+++ b/app/models/adding_positions_history.rb
@@ -9,7 +9,8 @@ def get_revenue
   end
 
   def roi
-    ((get_revenue / (amount.abs + get_revenue)) * 100).round(4)
+    adding_amount = trade_type == 'sell' ? amount.abs + get_revenue : amount.abs
+    ((get_revenue / adding_amount) * 100).round(4)
   end
 
   def amount_ratio
diff --git a/config/locales/zh-CN.yml b/config/locales/zh-CN.yml
index f5bfe4d..4305d54 100644
--- a/config/locales/zh-CN.yml
+++ b/config/locales/zh-CN.yml
@@ -21,9 +21,9 @@ zh-CN:
       sell: 多
       buy: 空
       adding_rate: 新增的投入带来的总的盈利或者亏损的金额 / 新增的投入
-      revenue: 空单：新增金额 - 新增数量*最新价格 - / 多单：新增数量*最新价格 - 新增金额
+      revenue: 空单：新增金额 - 新增数量*最新价格 / 多单：新增数量*最新价格 - 新增金额
       trading_fee: 交易当天的仓位快照总的资金费用乘以该笔交易占当天仓位的比例
-      roi: 已实现收益 / 平仓金额
+      roi: 空单：已实现收益 / 平仓金额  / 多单： 已实现收益 / （平仓金额 + 已实现收益)
       closing_revenue: 收益 - 资金费用
     wallet_history:
       deposit: 充值
diff --git a/spec/models/adding_positions_history_spec.rb b/spec/models/adding_positions_history_spec.rb
index 4ae3a48..4388b24 100644
--- a/spec/models/adding_positions_history_spec.rb
+++ b/spec/models/adding_positions_history_spec.rb
@@ -9,7 +9,7 @@
 
   describe '#roi' do
     it 'should equal revenue divide amount' do
-      roi = ((adding_positions_history.get_revenue / (adding_positions_history.amount.abs + adding_positions_history.get_revenue)) * 100).round(4)
+      roi = ((adding_positions_history.get_revenue / (adding_positions_history.amount.abs)) * 100).round(4)
       expect(adding_positions_history.roi).to eq (roi)
     end
   end