To select a tubular centrifuge, solid content of materials should be within 2%, If over the content, it will affect the separation. Frequent cleaning equipment will reduce the life of machine. The users can equipt decanting centrifuges before the technical step of tubular centrifuges, or use piping filter, adsorption and membrane filtration, and plateand frame filter press, to reduce the content of solid, so that reach the requirement of using tubular centrifuges. That can bring tubular centrifuges to play best performances. In Chinese medicine industry, users can equipt disk decanting centrifugal separator DHC500 before using tubular centrifuges, that would get much better effect.