Cleaning method of oil pollution in kitchen sewer pipe: 1. Animal grease blockage: if it is oil pollution, if something is blocked, you can only use special tools to clean the pipeline. 2, rinse with boiling water, water plugs are mostly oil plugs, boiling water can be dissolved. Then poke a few times with thick wire until the boiling water runs out. 3. You can pour 20% soda water into the pipeline and clean it with the pipeline cleaning tool. Other ways to clear the blockage of kitchen sewer pipes: 1, cement blockage: 35% hydrochloric acid is sold everywhere, you can try it. Add a little flour to act as a corrosion inhibitor, and urotropine is the best. The corrosion of steel can be reduced. 2. Go to the market and spend ten yuan to buy a 2-meter-long spring steel pipe dredging tool, bend it at 10-20 degrees above its head 1-2 cm, dredge it back and forth at the sewer entrance and exit, and wash it with water.