<a href="wechatide://minicode/50xTW4mE7N2p" target="_blank">wechatide://minicode/50xTW4mE7N2p</a> 挺搞笑的，我自己上传的bug报告代码段，自己打开这个链接，wxml里面全是问号。上传几次都这样，居然又发现一个新bug [图片] ----------------------------------------------------------你可能也打不开 代码段，我自己把代码复制给你，就几行 wxml： &lt;view&gt;模拟器正确，真机上错误的,宽度:{{dOneImageWidth}}rpx&lt;/view&gt; &lt;view class='oneimageview' style="width:{{dOneImageWidth}}rpx;height:400rpx;"&gt; &lt;image src="http://www.qszb.xyz/uploads/20180818/7a7d68451d4eb7b1bc1ece9cae02dfea.png" mode='scaleToFill'&gt;&lt;/image&gt; &lt;/view&gt; &lt;view&gt;真机，pc模拟器上都是 正确的，宽度写死:750rpx&lt;/view&gt; &lt;view class='oneimageview' style="width:750rpx;height:400rpx;"&gt; &lt;image src="http://www.qszb.xyz/uploads/20180818/7a7d68451d4eb7b1bc1ece9cae02dfea.png" mode='scaleToFill'&gt;&lt;/image&gt; &lt;/view&gt; wxss： .oneimageview { display: flex; flex-direction: column; justify-content: center; border-color:red; padding: 10rpx 10rpx 10rpx 10rpx; &nbsp; } .oneimageview image { height: 100%; width: 100%; &nbsp; border-width: 3rpx; border-style: solid; border-color: #ccc; } js: const app = getApp() Page({ data: { dOneImageWidth:0 }, onLoad: function () { }, onShow:function(){ var dOneImageWidth; dOneImageWidth = this.getWindowSize().wx_windowWidth * this.getWindowSize().pixelRatio; console.log(this.getWindowSize().wx_windowWidth) console.log(this.getWindowSize().pixelRatio) console.log(this.data.dOneImageWidth) this.setData({dOneImageWidth: dOneImageWidth}) }, getWindowSize: function () { var data = { screenWidth: 0, &nbsp; &nbsp;//手机屏幕宽度 &nbsp;px &nbsp; &nbsp; rpx要乘以 pixelRatio&nbsp;设备像素比 screenHeight: 0, &nbsp; //手机屏幕高度 &nbsp;px &nbsp; &nbsp; rpx要乘以pixelRatio&nbsp;&nbsp;设备像素比 wx_windowWidth: 0, &nbsp; //&nbsp;小程序可使用窗口宽度 &nbsp; &nbsp; 全屏下=手机屏幕宽度 wx_windowHeight: 0, &nbsp;//&nbsp;小程序可使用窗口高度 &nbsp; &nbsp; 手机屏幕高度 - 小程序顶部的的微信状态栏 pixelRatio: 2, &nbsp; &nbsp; &nbsp;//设备像素比 brand: '', model: '' } wx.getSystemInfo({ success: function (res) { data.screenWidth = res.screenWidth data.screenHeight = res.screenHeight data.wx_windowWidth = res.windowWidth data.wx_windowHeight = res.windowHeight data.pixelRatio = res.pixelRatio data.brand = res.brand data.model = res.model } }) return data } })