The invention discloses a collecting and sorting device for recycling construction waste. The collecting and sorting device comprises a box body, a scrap iron collecting device, a material shoveling plate, a construction waste collecting roller, a first waste conveying belt, a second waste conveying belt, a crushing frame, a first crushing plate, a connecting rod, a U-shaped guide plate, a pressing plate, springs, a cam, a second rotating shaft, a second motor, a joint lever, a sliding sleeve, a sliding rod, an L-shaped rod and a second crushing plate. According to the collecting and sorting device, the scrap iron collecting device is arranged so that scrap iron on the ground can be recycled, the structure is simple, and the collection efficiency is high; a first pipeline, a second collection frame and an exhaust fan are arranged to remove sundries such as plastic and foam in the construction waste, so that subsequent recycling of the construction waste is not influenced; and the crushing frame, the first crushing plate, the second crushing plate, the second motor, the cam, the connecting rod, the springs, the joint lever, the sliding sleeve, and the L-shaped rod are arranged and matched with one another, so that multi-direction crushing of the construction waste is realized, the crushing is uniform, the speed is high, and the crushing efficiency is improved.