Rectum mucosa suction sampler

The utility model relates to the field of medical instruments, in particular to a rectum mucosa suction sampler which comprises a connecting part, a connecting groove is inwards formed in one side of the connecting part, a connecting hole communicated with the connecting groove is formed in the connecting part, the connecting part is fixedly connected with a sleeve, and a push tube is slidably inserted into the sleeve. The push pipe is fixedly communicated with a first connecting pipe arranged in the connecting groove, one side, far away from the push pipe, of the first connecting pipe is connected with an air extractor, the part, far away from the connecting part, of the sleeve is sleeved with a sampling test tube, a preformed hole is inwards formed in the outer wall of the sampling test tube, a blade is slidably inserted into the sampling test tube, and the blade abuts against the end face of the push pipe. The rectal mucosa sampling device has the effect of reducing trauma to a patient in the rectal mucosa