A bladder-type automatic infusion apparatus is provided with a liquid storage pump (10), a drip chamber (20), an upper guide pipe (30), a lower guide pipe (40), an adjusting device (50), and a puncture needle (60). The liquid storage pump (10) is provided with an accommodation cavity (1100), a dynamic mechanism (1200), and a liquid storage mechanism (1300) the dynamic mechanism (1200) is movably disposed inside the accommodation cavity (1100), and the liquid storage mechanism (1300) is disposed at the front end of the accommodation cavity (1100) the liquid storage mechanism (1300) is provided with a bladder cover (1310), an elastic medicine bladder (1320), and an infusion end (1330), the infusion end (1330) is disposed at the outer side of the bladder cover (1310), the elastic medicine bladder (1320) is disposed on the inner wall of the bladder cover (1310) in sealing manner, a cavity for accommodating the liquid medicine is formed between the bladder cover (1310) and the elastic medicine bladder (1320), and the bladder cover (1310) is fixedly disposed at he front end of the accommodation cavity (1100). The elastic medicine bladder (1320) is provided with a bladder wall (1321) and a bladder cavity (1322). The dynamic mechanism (1200) is provided with a core bar (1210), a rubber plug (1220), a pull ring (1230), and a spring (1240). The drip chamber (20) is provided with a main body (2100), an input guide pipe (2200), an exhaust device, and a liquid draining device the liquid draining device is provided with an output pipe (2410), and the output pipe (2410) is provided with a liquid inlet hole (2410). The liquid draining device is further provided with an assembly base (2430) and a filter film (1440). The bladder-type automatic infusion apparatus has a low cost, is convenient to use, and can be widely applied.La présente invention concerne un appareil de perfusion automatique de type vessie qui est doté dune pompe de stockage de liquide (10), dune chambre de goutte à
