The invention relates to an automatic mesocarp stripping machine for coconuts. The machine mainly comprises a hydraulic cylinder, an magnetic exchange valve, a throttle valve, an overflow valve, a hydraulic pump, an oil filter, an oil tank, side cutters, an upper cutter, a sliding pressing plate, a tray, a tray support, a lifting lead screw, a lifting nut, a lifting servo motor and a feeding disc;the right side of the hydraulic cylinder is connected to the magnetic exchange valve; the throttle valve is connected to the magnetic exchange valve; the overflow valve is connected to the throttle valve; the hydraulic pump is connected to the throttle valve and the overflow valve; the hydraulic pump is connected to the oil filter; the oil filter is positioned above the oil tank; the side cuttersare arranged below the hydraulic cylinder in connection relation; the sliding pressing plate is arranged rightly below the hydraulic cylinder; and the sliding pressing plate is connected to the uppercutter. The automatic mesocarp stripping machine for coconuts adopts hydraulic transmission as power output, takes the feeding disc combining a lead screw mechanism with a nut mechanism as a feedingdevice. The upper cutter cooperates with the side cutters, so that coconut mesocarp can be pulled apart from the top, the side surface and the bottom end of a coconut at the same time, and the mesocarp stripping is rapid and simple, and the processing automation can be realized.