The xiphoid process is located in the middle part of the chest, if there is a pain and no pain, it may be caused by angina pectoris, cardiac neurosis, reflux esophagitis, peptic ulcer and other reasons, the specific causes need to go to the hospital to determine the examination. 1. Angina pectoris: angina pectoris is usually caused by narrowing of arterial lumen and insufficient blood supply to the heart muscle, etc. Patients will experience crushing pain in the chest, which is mostly located at the back of the sternum, and can be radiated to the anterior heart area, upper limbs and other parts of the body, and some of the patients will also experience chest tightness, palpitations, nausea, sweating, dyspnea and other symptoms. 2. Cardiac neurosis: cardiac neurosis is mostly caused by heredity, too busy at work, high pressure of life, etc. Palpitation is usually a common symptom at the onset of the patient, and the patient will have pain in the precordial area, which is mostly pins and needles, cuts and tugging pain, and some of the patients have autonomic nerve disorders, such as anxiety, insomnia, dizziness, tinnitus and sweating. 3. Reflux esophagitis: Reflux esophagitis is mostly caused by the decline of anti-reflux function and delayed gastric emptying, etc. Patients will experience burning sensation at the back of the sternum or the lower part of the xiphoid process, and patients will also experience reflux of gastric contents into the pharynx or the oral cavity. If there is a pain in the xiphoid process, you should go to the hospital in time to get medical treatment under the guidance of your doctor.