Beer column is usually dominated by metal materials, and its surface is polished by electroplating or stainless steel; Therefore, attention should be paid to avoid contact with corrosive liquid in normal use. If there is corrosive liquid or residual beer liquid on the surface of the beer column, we should wipe it with a clean towel in time. If necessary, we can add a little special wax when wiping, so as to keep the surface of the beer column clean for a long time. In fact, in the case of proper maintenance, the service life of a high-quality beer column can be maintained for more than ten years or even decades.