The invention provides a stubble-cleaning soil-crushing rotary tillage apparatus. A handle unit A, a handle unit C, a handle unit E, a handle unit B, a handle unit D and a handle unit F are successively uniformly arranged at the outer periphery of a cutter shaft along a spiral direction. The handle unit A is successively provided with a right stubble-cleaning knife, a right soil-crushing knife and a right rotary tillage knife from the left to the right; the handle unit C is successively provided with a right rotary tillage knife, a right stubble-cleaning knife and a right soil-crushing knife from the left to the right; the handle unit E is successively provided with a right soil-crushing knife, a right rotary tillage knife and a right stubble-cleaning knife from the left to the right; the handle unit B is successively provided with a left stubble-cleaning knife, a left soil-crushing knife and a left rotary tillage knife from the left to the right; the handle unit D is successively provided with a left rotary tillage knife, a left stubble-cleaning knife and a left soil-crushing knife from the left to the right; and the handle unit F is successively provided with a left soil-crushing knife, a left rotary tillage knife and a left stubble-cleaning knife from the left to the right. The apparatus provided by the invention can simultaneously realize stubble-cleaning, soil-crushing and rotary tillage functions, and is simple in overall structure, small in land occupation and convenient to operate.