Laser cladding technology is based on horizontal or small-angle reference plane at present. The poor powder converging characteristic when the nozzle is inclined is solved by adopting the technology of“hollow laser beam and internal powder feeding”. The variable postures moving of nozzle with larger inclined angle are realized by controlling laser processing robot. The axis direction of powder feeding nozzle is always coincident with curved surface normal direction. The uniform coating on the curved surface with large inclined angle are accomplished. The forces of molten pool on the curved surface are analyzed. The influences of different inclined angles on molten pool size and scanning path on cladding layer are also analyzed. The width of cladding layer keep stable by controlling the collimating gas rate, and the morphology and performance of curved surface cladding layer with different inclined angles are investigated detailedly. The results show that the thickness of cladding layer is uniform, the section microstructure is dense without obvious cracks and pores and the cladding layer is combined well with substrate. A new method for repairing complex metal parts is provided.