Aim\ To give a grasp the application of ANN in the CAPP system. Methods\ Based on the discussion about the traits and characters of ANN
this paper initially analyses and studies the application principles and methods of ANN in the intelligent CAPP system. Results\ ANN has good value and widely developed foreground. Conclusion\ The initial study and correlative people’s work later will build new channel for the application of ANN in the CAPP domain
and solve the existing problems in present CAPP system to a certain extent.