Negative-pressure automatic examining and blood sampling device

The invention discloses a negative-pressure automatic examining and blood sampling device. The device comprises syringe needles (8) and (5), a liquid tube (6) and a blood sample bottle (2). The device is characterized in that one end of the syringe needle (8) is sleeved with a handle (7) and then is in sealing connection with the liquid tube (6); the other end of the liquid tube (6) is in sealing connection with the syringe needle (5) equipped with another handle; the syringe needle (5) passes through a rubber cap (1) and then enters the blood sample bottle (2), wherein the rubber cap (1) covers an opening (4) of the blood sample bottle (2); scales (3) are formed in a body of the blood sample bottle (2); a connecting seat (9) is arranged at the upper section of the blood sample bottle (2); a pressure reduction pump (10) is connected to the connecting seat (9). The device is simple in structure, and simple and convenient to operate during sampling blood from a patient, and both time and force are saved; in addition, the obtained data are accurate; the difficulty of the medical staff at work can be decreased.