The main components of solid pipeline dredging agent are sodium hydroxide and aluminum powder. The principle is that after the dredging agent is poured into the blocked pipeline and water is added, sodium hydroxide and aluminum powder react chemically to produce a lot of heat and hydrogen. Because sodium hydroxide is a strong alkaline substance with strong corrosiveness, the generated heat accelerates the corrosion of sodium hydroxide to dissolve the blockage, thus playing the role of dredging the pipeline. The main component of liquid pipeline dredging agent is surfactant, which can melt the blockage.