The invention discloses a rotary guiding conveyor belt comprising side supporting plates, a rotary bottom plate, a rotary plate and a conveyer belt body. The side supporting plates are fixed to the two sides of the lower surface of the rotary bottom plate correspondingly, the rotary plate and the rotary bottom plate are connected through a rotary shaft, and one end of the rotary shaft and the rotary plate are fixed. The discharging port end of the conveyer belt body is fixed to the rotary plate, a worm wheel is connected to the other end of the rotary shaft, and a rotary motor is further fixedbetween the two side supporting plates and connected with a worm. The worm is matched with the worm wheel, the motor drives the worm wheel and the worm to rotate, the conveyer belt body is rotated toan appointed position, and then the motor is stopped. Owing to the self-locking functions of the worm wheel and the worm, the conveyer belt body is fixed, the structure is simple, the same conveyer belt body can be matched with different processing production lines, positioning is convenient, using is convenient, and the cost is saved.