Agricultural greenhouse film sectioning knife with online changeable blade

The utility model relates to an agricultural greenhouse film sectioning knife with an online changeable blade, which is characterized by comprising a sectioning knife rest. A knife clamp holder is perpendicularly mounted on the sectioning knife rest, a positioning partition board is fixedly mounted on the sectioning knife rest positioned above the knife clamp holder, a partition board wear-reducing block is arranged at one end of the positioning partition board, a main sectioning knife clamp and an auxiliary sectioning knife clamp inclined to the knife clamp holder are mounted on the knife clamp holder, and ball sockets are arranged on the knife clamp holder. The agricultural greenhouse film sectioning knife has the advantages that uninterrupted online change of a blade of the agricultural greenhouse film sectioning knife can be achieved, safety factor in blade change is improved, and further the problem of frequent blade dropping caused by large soft flow resistance of a film in the production process can be