The invention discloses a multipath grafting clamp automatic sorting, clamp feeding and seedling clamping fixing device for a vegetable grafting machine and relates to the agricultural machinery design technology. The multipath grafting clamp automatic sorting, clamp feeding and seedling clamping fixing device comprises a frame, a grafting clamp vibration sorting and conveying device, a clamp opening and closing mechanical arm and a grafting clamp moving device and is characterized in that the clamp opening and closing mechanical arm is used for clamping grafting clamps to to-be-clamped objects; the grafting clamp moving device is used for moving the grafting clamps from the grafting clamp vibration sorting and conveying device to the clamp opening and closing mechanical arm. The multipathgrafting clamp automatic sorting, clamp feeding and seedling clamping fixing device has the advantages that multipath grafting clamp sorting and conveying are achieved at the same time through a vibration system, accurate and reliable sorting is achieved, and high clamp conveying and supply efficiency is achieved; the synchronous and automatic 'holding-feeding-opening-closing' continuous operation of the grafting clamps is achieved, and important support is provided for the efficient multi-plant synchronous grafting of vegetables; the whole operation process is full-automatic and continuous.