Automatic fluid resuscitation or blood transfusion device

An automatic fluid resuscitation or blood transfusion device obtained by combining together a pump having two synchronous alternating parallel syringes, and a Y-branching tube having a one-way valve at respective branched portions. The device makes it possible to accurately control the flow pressure and flow rate of transfused fluid or blood, to ensure a high flow pressure even when a circuit has high resistance, and to inject the transfused fluid or blood into the body at a constant flow rate. Also, a fluid resuscitation or blood transfusion device obtained by combining together a pump having a plurality of parallel syringes and constituted of at least three syringe pumps, and a Y-branching tube having a one-way valve at respective branched portions. The device makes it possible to ensure a stable, high fluid pressure and to inject transfused fluid or blood into the body at a fluid pressure that is kept constant at all times.