Stage 2A rectal cancer is still a relatively early rectal cancer, which generally has better treatment effect. Surgery is the main treatment, which can be combined with radiotherapy and chemotherapy. Rectal cancer is generally staged into four stages, namely stage 1, stage 2, stage 3 and stage 4. stage 2A rectal cancer belongs to one of the relatively early rectal cancers. Stage 2A rectal cancer means that the tumor has broken through the submucosa and invaded the muscle layer, but there is no regional lymph node metastasis and metastasis of organs outside the rectum.Stage 2A is still a relatively early stage rectal cancer, but it needs to be confirmed as stage 2A through pathology after surgery. Most of the stage 2A rectal cancers need to be given chemotherapy regimen to consolidate the treatment after surgery after neoadjuvant radiotherapy, and the specific treatment should be determined together with the surgical biopsy, as well as the degree of proliferation and the location of tumor growth. For stage 2A rectal cancer, it is necessary to cooperate with doctors and start treatment as soon as possible to strive for the best prognosis.