The invention discloses a rectal anastomosis protection and drainage device. Specifically, it relates to the field, including: a connecting part, a blocking part and a drainage part. The connecting part is provided with an upper connecting port and a lower connecting port, and the upper connecting port and the The lower connection ports are provided with an intestinal cavity and an absorption blind cavity, the blocking part is installed in the lower connection port, and the drainage part is installed in the upper connection port. In actual use, the wounded part of the intestine is first cut open through surgery, and the device is connected to the incision of the intestine respectively, and passes through the connecting part, so that the device is connected and adsorbed on the incision of the intestine, passes through the blocking part and the drainage part, Drain the mixture inside the intestinal tract. To sum up, the device is simple and practical, and can promote the growth of the intestinal incision, making it naturally formed and anastomotic, reducing the dependence on suturing needles, and at the same time, it can be disintegrated naturally and dissolved in the intestinal tract, avoiding the need for disassembly and assembly. It is troublesome, reduces postoperative recovery time, improves operation efficiency, and is suitable for promotion.