What martial arts does Intercepting Fist Do consist of

The Intercept mainly consists of boxing, Wing Chun, Taekwondo, and fencing footwork.

Bruce Lee's first master was Ip Man, Wing Chun is his earliest contact with Chinese kung fu, followed by Bruce Lee is a U.S. citizen, boxing, fencing is the most practiced combat arts in the West, Bruce Lee and the father of the American Taekwondo, Lee Jun Jiu is also a close friend, the following picture as evidence,

The classic fighting style of wooden stake Wing Chun.

The dodge of boxing

The kicks of Taekwondo