The invention belongs to the field of metallic mineral deposit underground mining, i.e. for a vein-following developing roadway of an inclined stratified rock body, the invention provides a digging method with self adaptability to a rock body structure and an anchor bolt support protection mode with a view to the structure stability, so the stability of the vein-following developing roadway of the inclined stratified rock body is obviously improved. A roadway top plate obtained by using the roadway digging method provided by the invention is parallel to the bedding plane of the inclined stratified rock body, a bottom plate of the roadway is in the horizontal direction, and an upper disc upper and a lower disc upper of the roadway are respectively vertical to the bottom plate of the roadway. In order to further enhance the roadway surface layer carrying capability, waist lines of the upper disc upper and the lower disc upper are provided with anchor bolt support and protection. A metal net is arranged at an included angle part of the lower disc upper and the top plate, so clastic rocks are prevented from damaging the bottom plate through falling off from the top corner part. The stability of the roadway can be improved through the roadway shape obtained by using the roadway digging method, in addition, the process is simple, the utilization rate is high, and the method can be widely applied to the cross section design engineering of the vein-following developing roadway of the inclined stratified rock body.