Abstract: There are some disadvantages in passive testing and active testing on simulation software in practice. The de- tails on complementation between passive testing and active testing were proposed aimed at these disadvantages. Histor- ical data can be obtained through certain passive mechanisms from practical data in advance, and the effectiveness of test for the historical data can be improved. Both "orderly method" and "inversion method" can effectively overcome the dis- advantages of active testing and passive testing,also the complementation of them is more flexible in practice. BUU data obtained by the test can take great role for modification of parameter in mathematical model of simulation software. De- tails of the complementary testing should be associated with the development process of simulation software.

Key words: Software testing,Passive testing,Effective data,Simulation,Catalytic cracking