In the conventional direction parallel and contour parallel tool path strategies for the pocket machining， the cutting force and vibration are aggravated at inflection points and the sharp corners due to the drawbacks of these tool path strategies. In order to address the issues， a cycloid and spi ral integrated tool path generation method for pocket machining of aircraft stru ctural parts is proposed. Firstly， the cycloid tool path is used to slot the poc ket where the cutting force can be reduced. Secondly， the spiral tool path is ut ilized for the machining of pocket bottom where the machining chatter can be avo ided and the stability of the tool path can be guaranteed. Thirdly， the corner l ooping based tool path is embedded for the improvement of machining condition in corners. Meanwhile， the clothoid curve segment is adopted so as to smooth the t ransition of tool paths by taking the advantage of its continuous curvature chan ge. Experimental results show that， by using the proposed method， cu tting force condition can be improved and the vibration during machining can be reduced， while the surface machining quality is also satisfied.