From the perspective of artificial intelligence,knowledge system revision is embodied in belife revision.The development history of belief revision is a history of common progress and development with the branches of artificial intelligence. Belief revision can provide artificial intelligence with ideas and methods, and at the same time, artificial intelligence methods can also provide motivational support for belief revision. This kind of crossdomain research is complementary to artificial intelligence research and belief revision theory research. The continuous trial and error method of artificial intelligence is the “propeller” to promote the development of belief revision.The artificial intelligence method is “pragmatic” to a certain extent, because it does not presuppose a fixed theoretical model, as long as the problem can be solved, no matter what method or route can be tried. This dynamic and modifiable method of continuous “trial and error” promotes the development of belief revision, which breaks through its limitations and opens up new ideas for solving problems.