Rectal polyps 0.3cm, which are relatively small polyps, have two approaches: 1. Continue clinical observation and conservative treatment, without giving special treatment. And such polyps are benign lesions, mostly originating from the mucosal layer, so, like this case can consider regular review of colonoscopy, generally 1-2 years review. As long as there is no change in the polyps, most of them can be considered to continue the follow-up observation. 2, direct microwave treatment of polyps is given. At present, for the treatment of polyps, minimally invasive treatment can be given under colonoscopy, which is a more common treatment method in China. This treatment has a very good prognosis, and the patient does not have any other discomfort, the prognosis is relatively high quality. Therefore, microwave treatment of rectal polyps, in terms of price is also relatively cheap, generally 300-500 yuan to be able to solve the treatment of rectal polyps.