The invention relates to an agricultural machine. The agricultural machine comprises a machine frame, wherein square cocooning frames, which are arranged vertically, and a fixing bracket, which is used for clamping and fixing the square cocooning frames, are arranged on the machine frame, the square cocooning frames and the fixing bracket are in detachable connection fit, the square cocooning frames are mounted on the fixing bracket in an array manner, each square cocooning frame comprises a rectangular frame which is arranged vertically, a mounting screen is laid on each frame, meshes of each mounting screen are rectangular, each mounting screen consists of longitudinal screw rods and transverse screw rods which are of staggered arrangement, plastic rods are arranged at screen joints where the longitudinal screw rods and the transverse screw rods are connected, the two ends of each plastic rod are arranged in a manner of separately extending towards the two outer sides of the corresponding frame, each frame is formed through enclosing a first bar and a second bar, which are horizontally arranged up and down, and a third bar and a fourth bar, which are vertically arranged left and right, and plastic strips which extend obliquely and downwards are arranged on each second bar and are of spaced arrangement along the corresponding second bar. Due to the technical scheme provided by the invention, the convenience in mulberry silkworm culturing can be effectively improved.