If colon cancer has only regional lymph node metastasis, it should belong to stage III, and the 5-year survival rate of stage III patients is usually around 70%. In this case, surgical resection is needed first, and adjuvant chemotherapy is also needed after surgery, through which the chances of recurrence and metastasis in the future can be reduced. If the regional lymph nodes are relatively large and surgical resection is difficult, chemotherapy can also be administered first, with follow-up CT after 2-3 cycles of chemotherapy. if the tumor shrinks, surgical resection can be considered, and consolidation chemotherapy is needed after surgical resection. If the lymph node metastasis is distant lymph node metastasis, it should belong to stage IV, and the 5-year survival rate of stage IV colon cancer patients is usually around 10%.