diff --git a/bmi.js b/bmi.js
new file mode 100644
index 0000000..f72bc37
--- /dev/null
+++ b/bmi.js
@@ -0,0 +1,19 @@
+//吳思嬋
+
+var height=163;
+var weight=56;
+
+function getBMI(hei,wei){
+	return wei/((hei*hei)/10000);
+}
+
+function getMessage(hei,wei){
+	var a=getBMI(hei,wei);
+	if(a<18.5)console.log("過輕");
+	else if(a<=24)console.log("正常");
+	else if(a<=30) console.log("輕度胖");
+	else if(a<=35)console.log("中度胖");
+	else console.log("重度胖");
+
+}
+getMessage(height,weight);