The invention relates to an SAP ERP system data processing method, belongs to the technical field of data processing, and solves the problem that automatic opening of an SAP ERP client and automatic processing of service data are not realized through parameter transmission in the prior art. Comprising the following steps: receiving parameters transmitted by a non-SAP system, including an acquisition mode, a user identifier, a menu transaction code, service data and an execution operation button code, and taking the parameters as data to be acquired; verifying whether the user exists in the SAP ERP according to the user identifier, if so, acquiring a user name and a password, and adding to-be-acquired data; checking whether a corresponding menu exists in the SAP ERP, whether the user has the menu authority, and whether a service field and an execution operation button in the service data exist in sequence; and after verification is passed, if the acquisition mode is a CS mode, assembling the to-be-acquired data into a bat format character string, and calling the bat format character string based on an ActiveXObject control, otherwise, assembling the to-be-acquired data into a request parameter, calling a Web end URL of the SAP ERP system, and entering the SAP ERP system for data processing.