In order to improve the laser cladding quality of curved surface parts, the path planning of laser cladding is carried out according to the technical characteristics of laser cladding. The laser cladding equipment is introduced, and the model of cured surface parts is established. According to the model, an orbital path generation method based on the cutting plane method is proposed and the distance between cutting planes is determined by the cladding road overlap ratio. The effective processing defocusing amount is analyzed to calculate the processing step to obtain the interpolation point sets on the track and locate the processing control points. The offset method is used to get the position and attitude of the laser tip. The proposed method is verified by experiments with a high surface cladding quality, which proves the rationality of the path planning approach.