The causes of hernias are two factors: reduced strength of the abdominal wall and increased intra-abdominal pressure. Elderly people often suffer from chronic bronchitis, hypertrophy of the prostate gland, habitual constipation and other diseases; long-term chronic cough, difficulty in urination, and straining to defecate, resulting in increased intra-abdominal pressure, which displaces and compresses the intra-abdominal organs to the weak area of the abdominal wall. In addition, ascites caused by heart and lung diseases and liver diseases can also slowly cause an increase in abdominal pressure. In the elderly, the abdominal wall muscles and tendons degenerate and lose their strength, which, together with factors such as obesity or long-term illness in bed, can easily lead to atrophy of the abdominal wall muscles and hernia.