The invention discloses a lintel renovation process comprising the following steps that (1) cleaning is conducted, specifically, the weight ratio of water to a stain removing agent in a high-pressure water gun is 1:0.02-0.03; (2) manual polishing and same color outdoor polyester fluorocarbon paint spraying for coloring are conducted; (3) mechanical polishing is conducted; (4) putty is stuffed; (5) waterproof abrasive paper polishing is conducted; (6) coloring for a second time is conducted; (7) the original mark, label and typeface of spray lacquer are installed; (8) special oil paint is sprayed; and (9) glazing is conducted. According to the lintel renovation process, renovation of a lintel is achieved through the steps of effective cleaning, coloring for the first time, mechanical polishing, filling up, manual polishing, coloring for the second time, typeface installing, special paint spraying, glazing and the like, and the renovated lintel has a sun-proof and water-proof function and a long service life.