Throughout our lives, we often encounter abdominal pain inadvertently. Roundworms in childhood; “periods” in girls’ adolescence; various stones and acute and chronic inflammation; and various tumors that “scare the tiger” may greet us in the form of abdominal pain, reminding us that it’s time to slow down the pursuit of our desires and pay attention to our bodies. While the pursuit of success can be a great addition to our lives, ignoring the abdominal pain signals from our own bodies can bring us back to zero in an instant. So, in a sense, abdominal pain is actually our well-meaning friend, even though its presence can make you and me sick. What should we do to take abdominal pain seriously and deal with it properly? First of all, abdominal pain does not appear for no reason, as Chinese medicine says: if it passes, it does not hurt, but if it does not pass, it hurts. The body will only let abdominal pain send signals to us when it encounters trouble that does not pass, and these signals can be strong or weak, long or short, with different locations and characteristics, and contain a huge amount of information. We must have a relatively comprehensive understanding of it, so that we can quickly and accurately capture the key information points when we encounter abdominal pain, in order to make appropriate and reasonable responses. The causes of abdominal pain can be broadly categorized as 1. abdominal pain caused by various inflammatory diseases in the abdomen. 2, abdominal pain caused by rupture or perforation of intra-abdominal organs. 3, abdominal pain caused by various intra-abdominal obstructions or even strangulation. 4, abdominal pain caused by bleeding of intra-abdominal organs. 5.Abdominal pain caused by torsion of intra-abdominal organs. 6, abdominal pain caused by intra-abdominal organ injury or vascular lesion ischemia. 7, abdominal pain caused by extra-abdominal organ lesions and systemic diseases. Second, abdominal pain can be divided into three kinds according to the mechanism of its generation 1, real visceral organ pain: abdominal viscera only when their afferent nerve endings are chemically stimulated, causing smooth muscle spasm, strong contraction and expansion we will feel abdominal pain. This abdominal pain is manifested as a diffuse dull pain, and when the physician asks us where the pain is, we ourselves are often vague and unable to pinpoint it. On the contrary, if we really use a fast knife to cut the internal organs, we can not feel the abdominal pain. 2, abdominal pain: is the local abdominal pain caused by the stimulation of the inner surface of the abdominal biscuit, the pain of this abdominal pain is sharp and clearly localized. This is because the abdominal pain caused when the abdominal bikini peritoneum is pulled or chemical physical stimulation, and the pain can be aggravated by breathing, coughing and abdominal muscle activity. 3, abdominal visceral involvement pain: this is a certain visceral pain caused by a painful sensation in a body part distant from it, because the diseased organ and a part of the abdominal bicep distant from it have the nerve distribution from the same spinal cord segment. Third, the characteristics of abdominal pain caused by various diseases 1, the characteristics of abdominal pain of inflammatory diseases: the most common of these diseases in emergency medicine are: acute appendicitis, acute cholecystitis cholangitis, acute pancreatitis, acute gastroenteritis. This kind of abdominal pain is usually accompanied by chills and fever, abdominal distension, nausea and vomiting; if there are gallstones and fecal stones causing obstruction, there will be unbearable, knife-like pain, and there may be yellow sclera and skin staining when there are gallstones. In the case of acute pancreatitis and gastroenteritis, the pain is usually dull and poorly localized at first, but once the condition worsens and inflammatory exudate enters the abdominal cavity, it will turn into a constant burning pain accompanied by fever. Gallstone disease generally hurts in the right upper abdomen, and appendicitis has metastatic pain in the right lower abdomen. 2, organ rupture or perforation disease leading to abdominal pain characteristics: Most commonly seen in the stomach, duodenum, appendix and colon perforation, usually have a corresponding medical history, abdominal pain gradually aggravated after the sudden emergence of a more clearly localized to the whole abdomen spread of severe pain. What is more unusual is that it is not always obvious in the more obese elderly when the abdominal muscles are weak and unresponsive, or when the pain seems to be alleviated after a few hours of pain, but the condition is rapidly aggravated and should be observed with constant attention. Pathological colon perforation of non-traumatic nature in the elderly is often not obvious in terms of self-conscious symptoms, and even physician examination signs are not obvious, easily overlooked and missed diagnosis, and finally the condition worsens difficult to cure, especially need to raise vigilance. 3, the characteristics of abdominal pain caused by obstructive diseases: Most often seen in the perineal stones, biliary stones, and intestinal obstructive diseases. The abdominal pain caused by such diseases is characterized by persistent vague pain paroxysmal aggravated colic accompanied by nausea, vomiting and cold sweat. Urinary stones can be accompanied by ipsilateral low back pain and pain radiating to the ipsilateral perineum and hematuria; right upper abdominal pain of biliary stones can radiate to the right side of the chest and back and can appear yellow sclera and chills and fever; abdominal pain of intestinal obstruction can be accompanied by abdominal distension and anal stoppage of defecation. 4, the characteristics of abdominal pain caused by rupture of intra-abdominal organs: most of this abdominal pain is accompanied by a history of acute trauma, and very rarely it is caused by rupture and bleeding of the lesion based on a history of chronic disease (such as liver cancer). This abdominal pain is usually sudden with signs of traumatic hemorrhagic shock such as pale complexion, cold hands and feet, rapid pulse, and cold sweating. For women in their reproductive years, they should beware of ectopic pregnancy rupture. 5, abdominal pain caused by abdominal vascular disease characteristics: this type of abdominal pain is mostly seen in people with pre-existing cardiovascular underlying diseases, the reason is that thrombosis dislodged into emboli embolism abdominal organs vessels leading to abdominal pain. It is characterized by sudden onset of abdominal pain, persistent pain and paroxysmal aggravation, with no obvious signs of peritoneal irritation in the early stage, and obvious signs of peritoneal irritation (pressure pain and rebound pain) in the later stage after ischemic necrosis of the intestinal canal. One of the rare special cases is the patient with abdominal aortic aneurysm who has bleeding from ruptured abdominal aorta, which is typically characterized by sudden onset of severe abdominal pain and low back pain, and rapid shock, which is too late for resuscitation and has a very high mortality rate. In fact, no matter where we are and what we are doing, once we encounter abdominal pain, a friend who is annoying but not lacking in kindness, we should quickly adjust our travel plans and rush to the hospital to seek help from a professional physician is the wisest choice.