The invention relates to building material manufacturing equipment, in particular to a manufacturing device for hollow bricks. The manufacturing device for the hollow bricks can control falling of brick materials, automatically convey the brick materials, press the brick materials into the hollow bricks and automatically discharge the hollow bricks. The manufacturing device for the hollow bricks comprises a base and a servo motor, wherein the servo motor is arranged on the right front side of the top of the base. The manufacturing device for the hollow bricks also comprises a conveying mechanism, third supporting posts, a fixing frame, a discharging basket, a sliding plate and a pressing mechanism, wherein the conveying mechanism is arranged on the front side of the top of the base; the third supporting posts are evenly arranged on the side, close to the servo motor, of the top of the base; the fixing frame is connected among the tops of the third supporting posts; the discharging basket is placed in the middle of the fixing frame; the sliding plate is arranged on the side, away from the conveying mechanism, of the top of the base; and the pressing mechanism is arranged on the side, close to the servo motor, of the top of the base. According to the manufacturing device for the hollow bricks, the effects of controlling the falling of the brick materials, automatically conveyingthe brick materials, pressing the brick materials into the hollow bricks and automatically discharging the hollow bricks can be realized, and thus the working efficiency of hollow brick manufacturingis improved.