Engine control software testing method

The invention relates to a software testing method, in particular to an engine control software testing method, and solves the technical problem that the data throughput capacity of an RS-232 serial port communication mode cannot meet the rapid data access requirement due to the fact that the baud rate cannot be increased under the condition that the serial port communication mode is ensured by an existing engine software testing method. Comprising the following steps of: writing a keyword in a Workitem.log file, supplying power after communication between test equipment and a product is established, executing a keyword instruction at the moment, running content indicated by the keyword, finishing checking whether the Wkresut.log file exists or not, and writing 'Done!' if the Wkresut.log file exists, and the like. Different functions are operated according to actual conditions, each function corresponds to a respective keyword, mode switching and data packaging downloading are carried out on instructions in a