The five-year survival rate of moderately differentiated stage IIA rectal adenocarcinoma is about 70% after treatment; however, if not actively treated, it can develop to the terminal stage, which is a serious life-threatening disease, and therefore is a more terrible disease. Rectal adenocarcinoma is a common intestinal malignant tumor, of which, moderate differentiation represents the general malignancy of rectal cancer cells and general prognosis. Stage IIA is one of the TNM staging, which represents T3N0M0, T4N0M0 and many other conditions, such as the tumor grows through the intrinsic muscle layer to the subplasma membrane layer; there is no lymph node and distant metastasis, and so on. In this period, the lesions are relatively limited, so radical surgical resection is mostly feasible, and after surgery, radiotherapy and other therapies are supplemented according to the condition. After active treatment, the prognosis is good, and a five-year survival rate of about 70% can be obtained. However, patients need to actively cooperate with the doctor, otherwise the prognosis will be reduced if the disease progresses to an advanced stage.