Centrifuge tube and pipette

The utility model relates to a centrifugal pipe and a pipette for preparing plasm which is rich of platelets. The centrifugal pipe is mainly composed of a pipe body, a pipe cover and the pipette, and is characterized in that a multifunctional hole is arranged on the pipe cover, a hole cover is arranged on the hole, the outside diameter of the pipette is smaller than the inside diameter of the multifunctional hole, and the pipette is longer than the pipe body and is used by matching with an injector. In an implementing process, the plasm which is rich of the platelets is prepared by centrifugation twice; after blood is taken out, the blood is placed in the centrifugal pipe; after the first centrifugation, the blood in the pipe body is divided into three layers; after the pipette is matched with the injector to extract proper quantities of red blood cells through the multifunctional hole, the residual blood in the centrifugal pipe is evenly shaken; then, the second centrifugation is carried out, and the injector is used for extracting proper amounts of supernatant liquid; then, the residual blood in the centrifugal pipe is evenly shaken again and is prepared into the plasm which is rich of the platelets. The whole preparing process can be completed in one centrifugal pipe, a liquid removing process is avoided, the pollution of a sample is greatly reduced, and the preparing speed and the result precision are increased.