The invention relates to the technical field of mulberry silkworm raising equipment, in particular to a mulberry silkworm feeding device which comprises a conveying device, a mulberry leaf storage box, an air-drying passage, a cutting device, a releasing device and a control device. A power device comprises a first conveying belt, a second conveying belt and an automatic extensible conveying belt,mulberry leaves in the mulberry leaf storage box are conveyed into the cutting device through the first conveying belt and the second conveying belt, the first conveying belt is positioned at the bottom of the mulberry leaf storage box and provided with a weighing sensor, the second conveying belt is positioned between the first conveying belt and the cutting device and provided with an air-drying passage, the automatic extensible conveying belt is used for conveying cut mulberry leaves onto the releasing device, and the PLC is connected with the conveying device, the weighing sensor, the cutting device, the releasing device and a control panel. The mulberry silkworm feeding device can automatically feed mulberry silkworms, realizes full-automatic control and liberates labor.