A stator inside hole honing head comprised of the end plate, grinding segment, press plate, grinding head consisting of press spring, fixed axle and driving torque head, it featured on grinding head of one end of fixed axis is equipped with pair of end plates, between that is fixed with two grinding segments, one grinding segment is located with a press plate, between the two grinding segments is equipped with press spring, and the driving torque head is fixed on the other end of axle. The utility new model has advantages: 1. it is easy to operate and dismantle, economical and reliable with low production cost; 2. it is practical and effective with low labor strength, particularly suitable for trimming stator inside hole with good effect; 3. it can effectively trims the burr and high points on different diameters and lengths; 4. it has good business development potential.