The invention discloses a leaf removing device used for vegetable automatic processing. The device comprises a transmission device and a support platform; the transmission device comprises support plates, buffer pieces, transmission rollers, first gears, a first gear chain, second gears, a transmission motor, first shearing rollers, second shearing rollers, a first driving piece, a second drivingpiece and first shearing cutters; the outer sides of bottoms of the support plates are fixed with the support platform through the buffer pieces; two ends of the transmission rollers are rotationallyconnected to the support plates through bearings, and one end of each transmission roller passes through the support plates and is fixed with one of the first gears; and the first gears are in transmission connection with the second gears through the first gear chain. The leaf removing device used for vegetable processing can carry out classification processing on different vegetables such as celery, water spinach and artemisia selengensis, can be set whether to remove the stems of vegetables or not according to the edible demand, enhances the practicability of the whole device, does not needhand-held processing by staff, and improves the processing efficiency of vegetables.