One month after lung surgery and still coughing is usually normal, usually coughing after lung surgery will last 3 months to 6 months time. One month after lung surgery and still coughing is usually due to postoperative infection, pleural effusion, postoperative inflammation, etc. It may also be related to factors in life, such as environmental pollution, dusty and so on, which cause patients to cough, pain, fever and other symptoms. Postoperative diet of patients should be light and easy to digest food such as egg soup, corn soup, etc., you can do some moderate exercise such as walking, playing Tai Chi, swimming, etc., and pay attention to the body care more bed rest. Pay attention to postoperative care, always observe the physical condition, go to the hospital regularly for review, under the guidance of the doctor reasonable use of medication to relieve.