Straw smashing and deep burying device

The invention relates to the field of agriculture, in particular to a straw smashing and deep burying device which comprises a mounting support, a swing arm is rotationally connected to the mounting support, a winding roller is rotationally connected to the swing arm, a smashing cavity is rotationally connected to the swing arm, the winding roller is located in the smashing cavity, and the lower end of the smashing cavity is open. A positioning belt wheel I is fixedly connected to the crushing cavity, a positioning belt wheel II is fixedly connected to the mounting bracket, and the positioning belt wheel I and the positioning belt wheel II are in transmission connection; the crushing cavity is rotatably connected with a crushing shaft, the crushing shaft is fixedly connected with a plurality of crushing cutters, the plurality of crushing cutters penetrate through the crushing cavity and extend into the crushing cavity, and the plurality of crushing cutters are respectively inserted among the plurality of rows