Abstract: Power skiving is an advanced gear machining process with advantages of high efficiency, high precision, and dry cutting. To improve the tooth profile accuracy of gear skiving, a correction method for gear tooth profile slope deviations in power skiving based on adjusting tool setting parameters was proposed. A computational model for tooth profile slope deviation is established, incorporating the adjustment variables of tool pose. The effects of tool axes crossed angle and tool eccentricity on the tooth profile slope deviations are analyzed. A second-order polynomial response surface model is developed to characterize the relationship between tool pose adjustments and tooth profile slope deviations, and the Levenberg-Marquardt (L-M) algorithm is employed to efficiently and accurately determine the optimal correction values for the tool pose parameters. Experimental results show that the accuracy of both tooth profile deviation and slope deviation were effectively improved, thereby validating the correctness of the proposed correction method.