The tight feeling in the chest after lung nodule surgery may be caused by chest belt compression, incision healing, and postoperative inflammation not recovering completely. 1. Chest belt compression: Chest belt compression is a kind of medical auxiliary equipment commonly used after thoracic surgery, which can pressurize the surgical site to speed up the postoperative recovery, and may cause symptoms such as shortness of breath, local redness of the skin, etc., and may also cause the feeling of tightness in the chest. 2. Incision healing: the feeling of tightness in the chest after lung nodule surgery is usually caused by the incision is healing, usually in the healing process there will be a slight pain or itching sensation, there may also be a feeling of tightness in the chest. 3. Postoperative inflammation has not recovered completely: the tightness in the chest after lung nodule surgery is usually caused by postoperative inflammation that has not recovered completely, which may result in pain, swelling and other symptoms, and there may also be a tightness in the chest. It is recommended that patients with symptoms of tightness in the chest should undergo reasonable treatment under the guidance of a doctor, and at the same time, pay attention to regular review in the hospital.