The invention provides a blood composition acquisition device and method. The blood composition acquisition device comprises a blood collector (1), a
whole blood pump (14), a blood composition separation cup (17), a first
plasma transfer bag (24), a blood
platelet collecting bag (29) and a
red blood cell transfer bag (30). The blood collector (1), the
whole blood pump (14) and the blood composition separation cup (17) are sequentially connected through pipelines, and the blood composition separation cup (17) is connected with the first
plasma transfer bag (24), the blood
platelet collecting bag (29) and the
red blood cell transfer bag (30) through pipelines. Collection of multiple blood compositions such as
plasma, blood platelets and red blood cells can be achieved at a time through the same set of device
consumables without conducting multiple times of
vein vessel puncture on blood members, plasma exchange,
red blood cell washing and other work can be completed, blood waste is reduced, the
contamination phenomenon is avoided, the collecting working efficiency of the blood compositions is improved, and the labor intensity of
medical staff is reduced.