diff --git a/problems/0150.逆波兰表达式求值.md b/problems/0150.逆波兰表达式求值.md
index fd3d69aa..47da06f6 100644
--- a/problems/0150.逆波兰表达式求值.md
+++ b/problems/0150.逆波兰表达式求值.md
@@ -325,6 +325,33 @@ func evalRPN(_ tokens: [String]) -> Int {
     return stack.last!
 }
 ```
-
+Scala:
+```scala
+object Solution {
+  import scala.collection.mutable
+  def evalRPN(tokens: Array[String]): Int = {
+    val stack = mutable.Stack[Int]()    // 定义栈
+    // 抽取运算操作，需要传递x,y，和一个函数
+    def operator(x: Int, y: Int, f: (Int, Int) => Int): Int = f(x, y)
+    for (token <- tokens) {
+      // 模式匹配，匹配不同的操作符做什么样的运算
+      token match {
+        // 最后一个参数 _+_，代表x+y，遵循Scala的函数至简原则，以下运算同理
+        case "+" => stack.push(operator(stack.pop(), stack.pop(), _ + _))  
+        case "-" => stack.push(operator(stack.pop(), stack.pop(), -_ + _))
+        case "*" => stack.push(operator(stack.pop(), stack.pop(), _ * _))
+        case "/" => {
+          var pop1 = stack.pop()
+          var pop2 = stack.pop()
+          stack.push(operator(pop2, pop1, _ / _))
+        }
+        case _ => stack.push(token.toInt)   // 不是运算符就入栈
+      }
+    }
+    // 最后返回栈顶，不需要加return关键字
+    stack.pop() 
+  }
+}
+```
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