The invention discloses a carving knife capable of rapidly changing a blade. The carving knife comprises the blade, a knife rest, a first elastic component and a blade locking linkage component, wherein the blade locking linkage component comprises a back rod and a second elastic component; by enabling the knife rest provided with the blade, the back rod connected with the knife rest and the second elastic component sheathed on the back rod to be linked, and by adopting a mode that locking or unlocking is performed by the first elastic component connected onto the knife rest, quick changing of the blade is realized; when the blade is changed, only by pressing the back of the carving knife, the blade can be changed, and only the back of the carving knife needs to loosen after the blade is changed. The carving knife disclosed by the invention is simple in structure, has few parts, is easy to manufacture and simple and convenient in operation.