The utility model relates to a rigid platinum emery stick which is made of a steel sheet which is 60 to 150 millimeters in length, 10 to 30 millimeters in width and 0.5 to 2 millimeters in thickness. Two surfaces of the steel sheet are provided with cuts whose hardness is HRC55 to HRC70. Because the rigid platinum emery stick is made of steel sheet, the rigid platinum emery stick is fearless of dampness, can not fail when the rigid platinum emery stick touches water and oil stain; the easy is easy and the utility model has the advantages of abrasion resistance and long service life. The existing platinum emery stick is only used once in general, but the emery stick can be used repeatedly score of times; the price of every emery stick is one time than that of the existing platinum emery stick; the emery stick can repair ablative platinum contact point, so the platinum contact point can be saved at using.