Guiding and positioning rotary drill cylinder

The utility model provides a guide positioning rotary drill cylinder which is used for slope rock drilling and comprises a cylinder body, the top of the cylinder body is connected with a drilling machine, an assembly cavity is formed in the cylinder body, a plurality of drill bits are formed at the bottom of the assembly cavity, and a rock drilling area with the projection area larger than the thickness of the cylinder body is formed among the drill bits. The drill rod is assembled in the assembly cavity and extends out of the assembly cavity to form a pre-guiding positioning piece of the barrel during slope construction; a plurality of auxiliary drill bits are arranged between the assembling cavity and the drill rod, when the drill bits work, the auxiliary drill bits are driven to form a circular drilling face, and the multiple auxiliary drill bits and the pre-guiding positioning piece form a drilling platform; the periphery of the drill rod partially protrudes along the periphery to form a first rib plate,