The invention discloses a complex interface time sequence-based software system test verification method. The method comprises the following steps of: firstly carrying out interface attribute analysison a software system; generating a software system test verification case according to the interface attribute analysis result; carrying out feedback, iteration and optimization on the software system test verification case; and finally carrying out interface time sequence test verification by using the obtained software system test verification case. The complex interface time sequence-based software system test verification method is constructed by combining development engineering practice of spacecraft systems; and being compared with the prior art, the method is capable of effectively shortening the complex interface time sequence test period, reducing the test cost and improving the coverage and robustness of complex interface time sequence test, and has an important engineering practical meaning.