Grinding tool and grinding tool magazine

The invention provides a grinding tool and a grinding tool magazine, and the grinding tool comprises a tool bar which is a rod-shaped structural member, the end part of one side of the tool bar is provided with a connecting part, the end part of the other side of the tool bar is a bar body matched with an electric spindle, and the middle part of the tool bar is provided with a groove body which is recessed inwards; one end of the tool bit is provided with a fixing part connected with the connecting part, the surface of the other end of the tool bit is provided with a grinding area, the fixing part is of a hollow structure which is concave inwards and fixedly connected with the connecting part, a fixing hole is formed in the position, close to an end opening, of the hollow structure, and abrasive particles are arranged on the grinding area. The shape of the grinding area comprises a cylindrical shape, a conical shape, a conical disc shape and a disc shape; when the grinding area is cylindrical, a hollow circul