Isolation bag for germfree animals

An aseptic animal isolating packet comprises a housing, at least one closed isolation room, a delivery window and a delivery tube, wherein the delivery tube is arranged at one end of the isolation room and detachably provided with an air-tight sealing cap. The delivery tube is provided with a pair of latch hooks, the air-tight sealing cap is provided with a pair of water chestnut rings and a lock bolt, which threads two end portions of the water chestnut rings and is respectively mounted on the latch hooks. The lock bolt is provided with an eccentric block rotating with the same shaft, the eccentric block is arranged between the water chestnut rings and a handle, thereby the eccentric block can clamp and unclamp between the lock bolt and the air-tight sealing cap only through tripping the handle, which is easy to operate. The air-tight sealing cap can be taken down or hold down through single hand, which is convenient for feeders putting feed stuff into the isolation room, with great air tightness.