The invention provides a cutter body for clearing and covering straws in a wheat stubble land and belongs to an agricultural machine. A cutter handle with a mounting through hole is fixedly provided with a cutter for clearing and covering straws by virtue of a connecting plate; the connecting plate can twist for 5-8 degrees relative to the cutter handle; a groove in the vertical direction is formed in the underside part of an operating surface of the cutter for clearing and covering the straws; the operating surface, positioned at a cutter tip part, of the cutter for clearing and covering straws is of a concave cambered surface shape. The cutter body is reasonable and simple in structure, low in manufacturing cost, less in power consumption during operation, good in operating quality and high in efficiency.