The invention provides a method for manufacturing a wear-resistant corrosion-resistant surface layer of a piston rod through laser additive, and belongs to the technical field of advanced manufacturing. The manufacturing method is characterized in that a laser additive manufacturing method is adopted, a corrosion-resistant nickel-based alloy coating is manufactured on a piston rod body through thelaser additive, and the thickness is 0.55-1.03mm; and a wear-resistant and corrosion-resistant in-situ carbide reinforced nickel-based alloy surface layer is continuously manufactured on the surfaceof the corrosion-resistant nickel-based alloy coating through the laser additive, the hardness is greater than 900 HV, and the thickness is 2.93mm-3.44mm, and finally the wear-resistant and corrosion-resistant in-situ carbide reinforced nickel-based alloy surface layer is machined to the specified size and precision in a finish mode, so that the piston rod with good abrasion resistance and corrosion resistance of the surface layer can be obtained, and popularization and application have good economic and social benefits.