There are many types of hernias, which can be divided according to their location in the abdominal wall or specific causes. Common hernias according to the location of the abdominal wall include: Inguinal hernia: This is the most common type of hernia; about 2 to 5‰ of men suffer from this disease. Because this hernia grows in the “inner ring” of the abdominal wall, men tend to be more susceptible than women. In men, this is a potential area of weakness when the testicles are prolapsed. When the area of weakness is located in the internal ring, it can cause an inguinal hernia. In males, the hernia sac protrudes toward the scrotum and in females it protrudes laterally; a straight hernia is uncommon, and it arises close to the internal ring rather than in it. Epigastric hernia: another type of hernia that occurs more frequently in males. It appears above the belly button and is located in the lower and middle part of the abdomen. Femoral hernia: a female multifocal hernia, usually caused by pregnancy and childbirth, located in the thigh below the groin. Incisional hernia: Incisional hernia appears at the site of a previous surgical incision and can diffusely worsen in the weeks, months or even years after surgery. Umbilical hernia: appears in the umbilicus and is the most common hernia formed by a midline fascial defect, which can occur in adults and children. 2. It is generally classified according to specific causes: hydrocele: divided into testicular syringomyelia and spermatic cord syringomyelia. It is also divided into two types: traffic and non-traffic. Small intestine hernia: Small intestine is the most common hernia content, accounting for about 80%, followed by large omentum, others are cecum, sigmoid colon, bladder, fallopian tube, etc.