1、在httpd.conf配置文件中找到

<Directory "d:/wamp/www/">
    #
    # Possible values for the Options directive are "None", "All",
    # or any combination of:
    #   Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
    #
    # Note that "MultiViews" must be named *explicitly* --- "Options All"
    # doesn't give it to you.
    #
    # The Options directive is both complicated and important.  Please see
    # http://httpd.apache.org/docs/2.2/mod/core.html#options
    # for more information.
    #
    Options Indexes FollowSymLinks

#
    # AllowOverride controls what directives may be placed in .htaccess files.
    # It can be "All", "None", or any combination of the keywords:
    #   Options FileInfo AuthConfig Limit
    #
    AllowOverride all

#
    # Controls who can get stuff from this server.
    #

#   onlineoffline tag - don't remove
    Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1

</Directory>

将红色字体改成 Allow from 127.0.0.1 ::1  或者  改成 Allow from all

2、再打开wamp/alias/phpmyadmin.conf

<Directory "d:/wamp/apps/phpmyadmin3.5.1/">
    Options Indexes FollowSymLinks MultiViews
    AllowOverride all
        Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1
</Directory>

将红色字体改成Allow from 127.0.0.1 ::1  或者  改成 Allow from all

解释：

Deny from all 是禁止所有访问，但是允许 127.0.0.1 访问

修改为 Allow from all  允许所有访问