The invention discloses a synchronous drilling device, which comprises a material, a working table, first clamping plates, an air cylinder support, a first air cylinder, a lifting plate, second clamping plates, seat plates, drillers, second air cylinders and baffles, the first clamping plates are located at the centers of the left side and right side of the working table, and are connected with the working table by welding, the air cylinder support is located at the center of the top of the working table, and is connected with the working table through screw threads, the first air cylinder is located at the center of the top of the air cylinder support, and is connected with the air cylinder support through screw threads, the lifting plate is located at the center of the bottom of the first air cylinder, and is connected with the first air cylinder through screw threads, the second clamping plates are located at the centers of the left side and right side of the lifting plate, and are connected with the lifting plate through screw threads, the seat plates are located at the left end and right end of the working table, and are slidably connected with the working table, the drillers are located at the centers of the tops of the seat plates, and are connected with the seat plates through screw threads, the second air cylinders are located at the left end and right end of the working table, and are connected with the working table through screw threads, and the baffles are located by the left and right sides of the seat plates, and are connected with the working table through pins.