[ISAPI_Rewrite] 
# 3600 = 1 hour 
CacheClockRate 3600
RepeatLimit 32
# Protect httpd.ini and httpd.parse.errors files 
# from accessing through HTTP 

RewriteRule /software-files/(.*) /software-files/$1 [L] 
RewriteRule /images/(.*) /images/$1 [L] 
RewriteRule /sitemap.xml /sitemap.xml [L] 
RewriteRule /favicon.ico /favicon.ico [L] 
# For file-based wordpress content (i.e. theme), admin, etc. 
RewriteRule /wp-(.*) /wp-$1 [L] 
# For normal wordpress content, via index.php 
RewriteRule ^/$ /index.php [L] 
RewriteRule /(.*) /index.php/$1 [L]

将以上规则保存为 httpd.ini 放到空间根目录下，然后到Wordpress后台设置—固定链接—自定义结构：常用的设置里填  /%post_id%.html 

这样就可以了。当然需要配置 ISAP_rewrite 映射后才能生效。如果是我司空间，你不会配置，可以联系客服为你处理。