Abstract: In the process of conterless grinding of cylindrical work with through-feed method, the existing formula for truing the regulating wheel cannot ensure uniform contact of work over the entire width of the wheel, In order to obtain a bettor result, it is necessary to regulate the wheel or to re-nline the height of workpiece.The present article works out a.simpler calculating method in getting an ideal profile-adsirable hyperbolold-of the regulating wheel. On this basis,. The faults of the two existing truing methods afro disscused. Nn Attempt is made in the last part to illustrate, by the method of least square, the general characteristics of accurnter parameters for truing wheel.