The invention discloses a composite friction braking device. The composite friction braking device comprises an installing foundation, a front brake arranged on the installing foundation in a slidingmanner and a friction sliding resisting assembly used for resisting sliding of the front brake. The front brake comprises a base and two friction plates which are movably arranged on the base and canmove in a back-to-back manner. A friction braking channel for a braked piece to move in the sliding direction of the front brake is formed between the two friction plates. The front brake further comprises an elastic stop assembly used for stopping the back-to-back movement of the two friction plates. The composite friction braking device has the beneficial effects that the structure is simple, the occupied space is small, manufacturing is easy, cost is low, the braking effect is good, and the large-kinetic-energy braked piece can be braked in the small space.