The therapeutic drugs for rectal cancer lung metastasis include bevacizumab, cetuximab, irinotecan, 5-fluorouracil and so on. Rectal cancer is a malignant tumor disease of digestive tract, when lung metastasis of rectal cancer occurs, it indicates that the disease has developed to an advanced stage, at this time, targeted drug therapy and chemotherapy are needed. Therefore, the therapeutic drugs for rectal cancer lung metastasis include bevacizumab, cetuximab and other targeted drugs, which can inhibit the proliferation of cancer cells and make them apoptosis, so as to prolong the survival period of patients. Besides, chemotherapeutic drugs such as irinotecan, 5-fluorouracil, capecitabine, oxaliplatin, raltitrexed, etc. need to be used under the guidance of doctors, which can to a certain extent kill the tiny foci of distant metastasis and prevent the cancer cells from continuing to metastasize. Rectal cancer will not only metastasize to the lungs, but also to the liver, brain, bone and other places. All in all, patients with rectal cancer lung metastasis need to cooperate with doctors for active treatment, strengthen daily life management and go to hospital for follow-up on time.