The embodiment of the invention discloses a preprocessing method for program compiling and a program compiling device and is applied to the technical field of information processing. In the method of the embodiment, a preprocessing module is added in the program compiling device, the preprocessing module is called to obtain information of referencing functions of functions in source code files of a target program and output to the program compiling device when the program compiling device starts target program compiling, the program compiling device writes relevant information of the functions into compiling logs of the target program; the preprocessing module also stores the relevant information of the functions in a database, so that a data analysis system conveniently determines a function calling link of the target program according to the information of the referencing functions of the functions. By adopting the method, a real and reliable change range is provided for a testing system, limited system testing resources are injected into the relevant changing parts in a more centralized mode, and the testing efficiency is improved.