In daily life and work, people often suffer from collisions, sprains and other types of trauma, and pain may also occur after unconscious exposure to cold, humidity, overexertion and long-term inappropriate work position, in addition to inflammation or tumors and other lesions of various body systems and organs can produce pain of different degrees. Pain can be divided into acute pain and chronic pain from the course of the disease, and can be divided into headache, neck and shoulder pain, chest and abdominal pain, low back and leg pain, etc., from the source of soft tissue pain, joint pain, neuralgia, etc. The pain department is a medical unit that diagnoses and treats pain and painful diseases, and the majority of pain from the above-mentioned causes can be relieved or relieved in the pain department. It is worth mentioning that the causes of pain and pain itself are very complex, and professional pain doctors are more adept at making a relatively clear diagnosis and prescribing the right medicine according to the patient’s condition. Pain itself is a disease It hurts too much to eat, too much to sleep, too much to get up, too much to walk, too much to do anything …… Pain has become one of the main killers of human health, and one of the most common and direct factors causing the loss of human work capacity. The magnitude of the harm and negative impact of pain on the human body is incalculable. It can lead to dysfunction of the cardiovascular system, digestive system and endocrine system, and low immunity, and then induce various complications, often accompanied by disorders of the plant nerve function, and also cause varying degrees of mental fear, panic, anxiety, sadness and other adverse emotions, and even cause painful disability, until the patient’s life is affected, which brings great pain and negative impact to patients and their families. It is important to note that pain is an important signal of illness in the human body. Long-term pain tolerance can conceal the development of the disease, delay the best time for treatment and lead to deterioration. Moreover, pain itself is a disease, and pain tolerance will lead to deep-seated damage to body tissues, increasing the rate of disability and mortality! What kind of diseases are suitable to be seen in pain medicine? Pain medicine is a multidisciplinary crossover field involving many clinical specialties, so the professional scope is relatively broad, and the treatment scope includes: various acute and chronic pain, such as low back pain, chronic headache, lumbar spondylosis, elderly and post-herpetic nerve pain, advanced cancer pain, long-term post-operative pain, phantom limb pain after amputation, etc. Any chronic, long-term pain that bothers people’s life and health can be treated in the pain department. At present, the treatment method of pain department is mainly based on drug treatment, and vigorously develops towards minimally invasive treatment with less damage, quicker effect and tolerable. The World Health Organization points out that acute pain is a symptom and chronic pain is a disease. Experts remind that when patients have pain symptoms, they should first choose to go to the pain department and not take painkillers at will, otherwise they may damage liver and kidney function, hematopoietic function, and also cover up certain major life-threatening diseases. There was a patient who thought it was frozen shoulder due to neck, shoulder and back pain, but later the condition worsened and he went to the pain department to find out that the real cause was lung cancer, but the best time for treatment was missed. Therefore, the “pain” signal from the body is a disease alarm, which should be given sufficient attention.