Stage IIa colon cancer is not almost always curable, but just belongs to the category of better treatment effect and higher survival rate, and there are still differences between individuals. Stage IIa colon cancer invades the intrinsic muscle layer and does not have regional lymph node metastasis and distant metastasis, and the prognosis of the corresponding lesions is good through radical resection; clinically, taking 5-year survival rate as the standard, the 5-year survival rate of Stage IIa cancer can reach 90%, but not almost all of them can be cured, and some of the patients may have recurrence and metastasis afterwards. Stage IIa colon belongs to the relatively early, in the standardized treatment after the physical condition, can get a relatively good recovery, must pay attention to the early detection of active treatment, in the clinician’s guidance for standardized care, can maximize the possibility of improving the cure rate.