Patients with chest pain when lying down, the common clinical causes are mainly the following: a. Patients with costochondritis or intercostal neuritis, can cause chest pain when lying down when the local muscles and nerves are involved, patients can be perfected by chest CT, or X-ray examination to exclude tumor lesions. Patients with chest pain can rub topical fotarine ointment and take oral swelling and painful drugs to relieve the chest pain caused by costochondritis or intercostal neuritis more quickly. Patients with myocardial ischemia or unstable angina can also experience chest pain when lying down. Patients are advised to go to the cardiology department as soon as possible to improve cardiac ultrasound, electrocardiogram, cardiography and other examinations to clarify the specifics of the heart disease and, if necessary, give dilation to improve circulation to reduce the symptoms of chest pain.