Cylinder body manufacturing mould

The utility model discloses a cylinder body manufacturing mould which comprises an outer mould and an inner mould. The shape of the inner lateral face of the outer mould is the same as the shape of the outer lateral face of the inner mould, and a forming gap which guarantees that a to-be-machined cylinder body fits with both the outer mould and the inner mould can be formed between the outer mould and the inner mould. When a cylinder body is machined, the outer mould and the inner mould are sleeved on the to-be-machined cylinder body, then the outer mould or the inner mould is moved to an end portion of the to-be-machined cylinder body, at the moment, the outer mould and the inner mould are enabled to be coaxial, and end faces of the outer mould and end faces of the inner mould are enabled to be parallel and level so as to machine the shape of the to-be-machined cylinder body into a needed shape. The combination of the outer mould and the inner mould is adopted in the cylinder body manufacturing mould, manufa