Frequent urination of lung cancer is related to the disease, which can reduce water intake, use medicine for frequent urination and actively treat lung cancer. 1. Reducing water intake: lung cancer patients can reduce water intake when frequent urination is more serious, and drinking less water can temporarily relieve frequent urination symptoms. 2. Medications for frequent urination: when lung cancer patients have frequent urination symptoms, most of them are considered to be caused by urinary system infection, and antibiotics such as levofloxacin can be used to alleviate frequent urination symptoms. If frequent urination is caused by poor function of bladder contraction, drugs such as Solynacin Succinate Tablets should be used. The use of medicine should be guided by doctor. 3. Actively treating lung cancer: frequent urination may be a complication caused by lung cancer, so it is necessary to actively treat lung cancer and adopt comprehensive treatment plan such as radiotherapy, chemotherapy and surgery. Lung cancer patients with frequent urination can go to regular hospitals in time to seek standardized treatment plan, and do not use medicine by themselves.