Animal test drainage tube fixing device

The invention provides an animal test drainage tube fixing device which comprises a device body worn on an animal body and a fixing part used for fixing a drainage device, and the device body comprises a flexible piece. Four through holes for four limbs of an animal to pass through and a plurality of drainage tube through holes for drainage tubes to pass through are formed in the surface of the flexible sheet; the flexible sheet is of a double-layer sealing structure, and an inflation hole is formed in the surface of the outer layer and used for inflating an interlayer of the flexible sheet. First connecting pieces are arranged at the two ends of the flexible sheet, and the two ends of the flexible sheet are detachably connected through the first connecting pieces; the fixing part is detachably installed on the device main body, the fixing part comprises a fixing part main body, a pocket and a drainage tube channel are arranged on the fixing part main body, and the drainage tube channel is communicated with a