Leg pain after chemotherapy for lung cancer may be a side effect of chemotherapy, which can be treated by physical therapy, medication and suspension of chemotherapy if necessary. 1. Physiotherapy: if leg pain is more obvious, appropriate massage can be given to the leg, which can help promote local blood circulation and relieve pain, and local physiotherapy, such as microwave therapy and ultrasound therapy, can be taken to relieve pain. 2. Medication: Pneumonia patients with chemotherapy-induced leg pain is likely to be caused by the neurotoxicity of the drug, often need to take non-steroidal anti-inflammatory drugs, such as ibuprofen, diclofenac sodium, celecoxib and so on. 3. Suspend chemotherapy: some patients have obvious side effects and serious pain symptoms during chemotherapy, if necessary, chemotherapy can be suspended according to doctor’s instruction. Leg pain after chemotherapy for lung cancer should consult doctor in time and cooperate with doctor to take treatment or therapy, so as to avoid aggravation of pain or leading to other serious adverse reactions.