Dust cover for grinder and dust-free angle grinder

The utility model provides a dust cover for a grinder and a dust-free angle grinder, which belong to the technical field of a grinder, and aims to solve the flying dust problem when the grinder grinds. The dust cover for the grinder comprises an encloser main body which covers a grinding wheel of a grinder, wherein the upper part of the encloser main body is connected with a handpiece clamp which fixes the encloser main body onto a handpiece of the grinder, the encloser main body is a cylinder with an open lower end, a cylindrical wall covers the grinding wheel along the full peripheral direction of the grinding wheel of the grinder, the lower part of the encloser main body is connected with a soft rubber cover, and a dust collection pipe is connected onto the encloser main body, and is communicated with the inner cavity of the encloser main body. In the dust-free angle grinder using the dust cover, the dust collection pipe is connected with a dust removal fan before the construction, the suction force genera