The invention discloses a generation method of a call ticket file, comprising the following steps that: a processing node carries out processing after receiving charging information; when the conditions of generating a call ticket file are satisfied, a request message which carries the call ticket amount information contained in a to-be-generated call ticket file is sent; the information is used to request for a unique and continuous file serial number distributed within the scope of all processing nodes and a unique and continuous call ticket running number inside the to-be-generated call ticket file; finally, returned file serial number and call ticket running number corresponding to the request message are received. The invention also provides a generation system, a transmission method, a transmission system and a transmission device of a call ticket file as well as a charging gateway system and a charging system. The generation method of a call ticket file ensures that each processing node generates a unique and continuous call ticket running number and call ticket serial number and prevents a charging center from identifying repeated call tickets and call ticket files, thereby reducing the complexity of call ticket check carried out by the charging center.