Mobile terminal user mail account information synchronizing method and system

The invention relates to a mobile terminal user mail account information synchronization method including the first step that the user renews the account information; the second step that a PushMail server produces a welcome mail which includes accessories which include the account information that is renewed by the user, a PushMail server short message sending module sends specific short messagesto the mobile terminal and activates a PushMail client which initiates commands to receive the new mail; the third step that the PushMail client receives the welcome mail; the fourth step that an account information recognition module recognizes the accessories and notifies an account information renew module of the PushMail client to renew the account information after the PushMail client gets the account information renewed by the user from the accessories; the fifth step that the account information renew module of the PushMail client renews the account information of the user. The invention realizes the synchronization of the mail account information of the mobile client user.