First, please see an article: Get a Handle On SOAP Headers http://www.aspnetpro.com/features/2002/10/ASP200210DW_F/ASP200210DW_F.ASP adopts this article, you can learn how to go in .NET environment Get the operation of the SOAP message header and customize the SOAP message, add your own features! This is very useful when developing Web Services such as security, identity authentication, accessory transmission, etc.! Due to the time relationship, I haven't come to translate, forgive me! The author defines a marker AuthenticationToken in the routine to store information that uniquely identifies the identity of the registered user, and adds tag information to the user to the server to the server to the server to the server to the user's header. , Format the following message format: XML Version = "1.0" eNCoding = "UTF-8"?>