FOLFOX4 regimen is able to treat colorectal cancer, gastric cancer, liver cancer and other malignant tumors, which belongs to the common chemotherapy regimen. The drugs included in FOLFOX4 regimen are calcium folinic acid, oxaliplatin, 5-fluorouracil, etc. This regimen can be used for preoperative neoadjuvant chemotherapy, postoperative adjuvant chemotherapy of colorectal cancer, and also can be used for chemotherapy of recurrent metastatic colorectal cancer, with the time of 14 days as one treatment course. The toxic side effects are relatively mild and easy to accept. Adjuvant chemotherapy can reduce the chances of recurrence and metastasis in the future and improve the survival rate of patients. If the patient is unable to undergo surgical resection, this chemotherapy regimen can also be used to control the tumor and prolong life appropriately. Be sure to choose the chemotherapy regimen under the guidance of the doctor, because each person has a different physical condition, different conditions, and different chemotherapy regimens to take.