There are two main reasons for the appearance of hernia, one is the weakening of the abdominal wall strength, meaning that the belly is getting weaker and weaker, can not stop coughing or breath holding from the stomach out of the top of the force, of course, clinically common is the belly localized in a place obviously weak; the second is the increase in intra-abdominal pressure, meaning that because of a variety of reasons for the top of the belly to the top of the force of the abnormally large. The common reason for the weakening of the abdominal wall strength is that people’s belly congenitally have a few places relatively weak, such as the groin, navel, abdominal white line, half-moon line, waist eye and so on a lot of places; another reason is due to a variety of reasons for the nutrition is not good belly thin; the third reason for the treatment of disease needs belly knife, after the knife, and due to cough, malnutrition or infection and other reasons did not grow well, there will be a hernia. The common causes of increased intra-abdominal pressure are chronic cough, chronic constipation or difficulty in urination, and a few people can also develop hernia due to cirrhosis of the liver secondary to a large amount of ascites, or practicing weight lifting with improper exertion. Most of these problems mentioned above are more common the older you get, so hernias are always more common in older people. Knowing the common causes of hernias, we can take targeted measures to prevent hernias as much as possible. In most cases, hernias can be prevented by exercising to strengthen the abdominal muscles, and by treating coughs, constipation and urinary difficulties.