Fuente: WIPO "processing tomato" The invention belongs to the technical field of tomato grafting, particularly relates to a semi-automatic tomato grafting machine and a control system thereof, and aims to solve the problems that an existing semi-automatic grafting machine is low in efficiency, high in price and poor in using effect. The support is used for tomato grafting support; the two rotating mechanisms are both mounted at the top of the machining platform; the rootstock mechanism is mounted at the top of the processing platform and used for cutting the seedling rootstock and retaining the lower half part of the seedling, and the rootstock mechanism comprises a linear cutting unit and a rootstock fixing disc; the scion wood mechanism is mounted at the top of the processing platform, is used for cutting the scion wood of the nursery stock and retaining the upper half part of the nursery stock, and comprises a rotary cutting unit and a scion wood fixing disc. The device is simple in structure, convenient to operate, high in processing efficiency, low in cost and good in using effect, and seedlings can be placed on the two sides of the device.