The spreader is used to clamp the projectiles during the use of the slingshot. It is convenient and labor-saving to open the slingshot, improve the aiming accuracy of the slingshot, and make it easier to release the projectiles. Due to the complicated structure of the diffuser in the prior art, Chinese patent cn206670450u discloses a structure of a diffuser, which includes a fixed block. The left end of the fixed block is provided with a pullback device for the trigger, and the right end of the fixed block forms a clamp opening to the right. , the opening and closing left clamping arm and the right clamping arm are fixed in the clamping mouth through clamping arm fixing pins, the inner side of the left clamping arm is connected to the No. ⅰ elastic piece through hole of the arc-shaped elastic piece through the elastic piece fixing pin, and the right clamping arm The inner side is connected to the No. ⅱ shrapnel through hole of the arc-shaped shrapnel through a shrapnel fixing pin. The free ends of the left and right clamping arms are equipped with clamping posts, and the clamping posts are covered with rotating sleeves and axial limiting nuts. cap. And a top pin is provided at the end of the fixed block. However, its structure is complex, its cost is high, and its promotion is difficult.