The 2a in colon cancer 2amFOLFOX6XELOX refers to colon cancer staged at stage 2a, while mFOLFOX6, XELOX refers to the chemotherapy regimen for colon cancer. Stage 2a colon cancer means that the tumor has invaded the muscularis propria, subplasma membrane, or pararectal tissues of the colon or rectum without peritoneal covering, and there is no lymphatic metastasis or distant metastasis yet. The mFOLFOX6 regimen consists of a chemotherapy regimen of oxaliplatin, calcium folinate and fluorouracil, of which oxaliplatin is a new platinum-based anticancer drug, and the combination of these 3 drugs helps to enhance the efficacy of the treatment and better control the disease. XELOX is a chemotherapy regimen composed of oxaliplatin and capecitabine, which is characterized by significant efficacy, low toxicity as well as ease of use. When diagnosed with colon cancer, one should go to a regular hospital for consultation and treatment under the guidance of a doctor.