This is a simple trick that laravel run on IIS Server, this configuration will delete the public folder from the URL, but does not delete the public folder in the application. I was inspired by a trick-owned https://gist.github.com/leabdalla/6135627, but it can not load css, js, routing and other files. And I have experimented that overall laravel can run normally. this is my simple code, I put web.config in the root folder, and I did not change any of the main application, especially in public folders.
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<defaultDocument>
<files>
<clear />
<add value="index.php" />
<add value="default.aspx" />
<add value="Default.htm" />
<add value="Default.asp" />
<add value="index.htm" />
<add value="index.html" />
</files>
</defaultDocument>
<rewrite>
<rules>
<rule name="Imported Rule 1">
<match url="^(.*)$" ignoreCase="false" />
<action type="Rewrite" url="/public/{R:1}" />
</rule>
<rule name="Imported Rule 2" stopProcessing="true">
<match url="^(.*)$" />
<conditions logicalGrouping="MatchAll">
<add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
</conditions>
<action type="Rewrite" url="public/index.php/{R:1}" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>