Renovation of automobile interior is a very good thing. The specific steps are: 1. Step 1: Cleaning: use a special cleaning agent for automobile interior, thoroughly clean the whole interior leather with a brush, brush it with a soft cotton cloth and wipe off the residue on the leather surface, and then air dry; 2. Step 2: Decontamination, that is, thoroughly brush off the dirt on the interior with a brush dipped in automobile interior cleaner, wipe off the film on the entire interior leather, wipe off the stains left on the leather surface, then clean it and air dry it; 3. Step 3: Repair: Use fine sandpaper to polish the damaged part, and then use a hair dryer to blow off the dust. Then, apply the car leather repair subsidy to the damaged leather with a repair knife, scrape it gently, and then air dry or blow dry with a hair dryer.