The embodiments of the present invention disclose an upper computer software stress test method. Upper computer software includes a plurality of relatively independent communication modules which applies different communication protocols; each communication module communicates with at least one lower computer; the communication modules communicate with the lower computers through the interfaces ofan upper computer; and therefore, the simulation of communication protocols and communication modes in the operating environment of the upper computer software can be realized. When the upper computer software starts, the upper computer software performs data communication with the lower computers, and therefore, the simulation of the data amount of communication data between the upper computer software and the lower computers is realized. Therefore, the upper computer software stress test method provided by the embodiments of the present invention simulates the operating environment of the upper computer at least from the aspects of communication protocols, communication modes and data amount, and therefore, the stress test of the upper computer software in a relatively complete operating environment can be realized, and the effectiveness of the stress test results of the upper computer software can be improved.