The invention discloses a method and a device for checking public network service of a WWW server. The method includes transmitting a first HTTP request package to the WWW server, wherein the first HTTP request package request to acquire non-specified documents of business of the public network service to be checked and provided by the WWW server; receiving a first HTTP response package from the WWW server, wherein the HTTP response package comprises the non-specified documents of the business; checking the non-specified documents of the business according to the standard of the non-specified documents preset in the public network service to be checked to determine whether the non-specified documents of the business include the content meeting the standard of the non-specified documents; determining that the WWW server provides the public network service to be checked under the condition that the non-specified document of the business contains the content of the standard of the non-specified documents. Therefore, the erection of the public network service of the WWW server in a different place can be grasped quickly and accurately.