PROBLEM TO BE SOLVED: To provide an improved apheresis apparatus.SOLUTION: The apheresis apparatus includes: drawing means for drawing whole blood from a donor centrifugal separation means a first path extending between the drawing means and the centrifugal separation means a first pump arranged in the first path detection means for detecting the blood components flowing out from the centrifugal separation means a second path extending between the centrifugal separation means and a first container a third path extending between the first container and the drawing means a second pump arranged in the third path a fourth path extending between a portion in the third path in between the second pump and the first container and a portion in the first path in between the drawing means and the first pump and control means controlling these means and controlling selective conduction of the paths.
