Centrifugal machine capable of integrally placing sample box

The utility model relates to the technical field of centrifugal machines, and discloses a centrifugal machine capable of integrally placing a sample box, which comprises a centrifugal machine body, fixing pins are arranged on two sides of the front end of the centrifugal machine body in a threaded manner, a placing groove is arranged in the middle of the centrifugal machine body, and a rotating shaft is rotatably arranged in the middle of the placing groove. A sample placement box body is fixed to the upper end of the rotating shaft in a threaded mode, a replacement disc is fixed to the upper end of the sample placement box body in a threaded mode, a clamping disc is clamped to the lower end of the sample placement box body, and a device box is fixedly arranged on one side of the centrifugal machine body. According to the centrifugal machine, the sample box is combined with the rotor of the centrifugal machine, so that the sample box can be directly arranged on the rotating shaft of the centrifugal machine, w