方法一:  用 vertical-align: middle;

<view class="container"><view class="search"><image src="../../images/icon/search.png" alt="" /><text class="tex">搜索</text></view></view>

.search {height: 50rpx;border: 1px solid red;text-align: center;background-color: rgb(245, 245, 248);border-radius: 10rpx;
}.search image {width: 30rpx;height: 30rpx;vertical-align: middle;
}.search .tex {font-size: 24rpx;color: #999;margin-left: 10rpx;
}

方法二:  弹性