The invention discloses a spheroidized MMC composite coating material and a laser cladding method thereof. The material is formed by mixing Fe powder, Mn powder, Si powder, Cr powder, Ni powder and nano WC powder. The material is prepared by the method which comprises the steps that (1), the powders are mixed and placed into a ball milling machine to be milled to obtain milled powder; (2) the milled powder is dried to obtain dried powder; (3), the dried powder is processed by using a laser spheroidizing method to obtain the spheroidized MMC composite coating material. The cladding method is characterized in that a synchronous powder conveying method is adopted to perform laser cladding. The material has the advantages that ceramic particle distribution is uniform, the hardness is higher, the wear resistance is better, and a special-shaped face can be repaired.