A winding roller motor for driving a bobbin to rotate, which is comprised of a spinning station of a textile machine, wherein the winding roller motor comprises a fixed shaft, two bearings mounted on the fixed shaft and disposed to sleeve both ends of the fixed shaft, a drum casing, end caps at both ends of the drum casing, a motor stator fixed on the fixed shaft by means of a stator shaft sleeve, a driving magnetic ring disposed on an inner wall of the drum casing at a position corresponding to the motor stator, wherein the drum casing is disposed to sleeve the bearings, wherein the end caps are disposed on the fixed shaft at the outer side of the two bearings to close the drum casing, and the winding roller motor comprises a speed measuring unit having - a speed measuring circuit board with a speed measuring circuit element, wherein the speed measuring circuit board is adapted to be connected to a control unit outside the winding roller motor via a lead and wherein the speed measuring circuit board being fixed on the fixed shaft or on an outer surface of a speed measuring shaft sleeve being press-fitted and fixed on the fixed shaft, and - a speed measuring magnetic ring being provided on the inner wall of the drum casing at a position corresponding to the speed measuring circuit element on the speed measuring circuit board, wherein the driving magnetic ring and the speed measuring magnetic ring are provided on the inner wall of the drum casing at such a certain distance with respect to each other that the speed measuring effect of the speed measuring unit is prevented from being influenced by heat generated by the motor stator. a fixed shaft, two bearings mounted on the fixed shaft and disposed to sleeve both ends of the fixed shaft, a drum casing, end caps at both ends of the drum casing, a motor stator fixed on the fixed shaft by means of a stator shaft sleeve, a driving magnetic ring disposed on an inner wall of the drum casing at a position corresponding to the motor stator, wherein the drum casing is disposed to sleeve the bearings, wherein the end caps are disposed on the fixed shaft at the outer side of the two bearings to close the drum casing, and the winding roller motor comprises a speed measuring unit having - a speed measuring circuit board with a speed measuring circuit element, wherein the speed measuring circuit board is adapted to be connected to a control unit outside the winding roller motor via a lead and wherein the speed measuring circuit board being fixed on the fixed shaft or on an outer surface of a speed measuring shaft sleeve being press-fitted and fixed on the fixed shaft, and - a speed measuring magnetic ring being provided on the inner wall of the drum casing at a position corresponding to the speed measuring circuit element on the speed measuring circuit board, - a speed measuring circuit board with a speed measuring circuit element, wherein the speed measuring circuit board is adapted to be connected to a control unit outside the winding roller motor via a lead and wherein the speed measuring circuit board being fixed on the fixed shaft or on an outer surface of a speed measuring shaft sleeve being press-fitted and fixed on the fixed shaft, and - a speed measuring magnetic ring being provided on the inner wall of the drum casing at a position corresponding to the speed measuring circuit element on the speed measuring circuit board, wherein the driving magnetic ring and the speed measuring magnetic ring are provided on the inner wall of the drum casing at such a certain distance with respect to each other that the speed measuring effect of the speed measuring unit is prevented from being influenced by heat generated by the motor stator.