Hemorrhoids are caused by varicose veins, mainly due to inflammation of the hemorrhoidal plexus due to acute or chronic infection, resulting in gradual weakening of the elastic tissue of the vein wall due to fibrosis and lack of resistance, which causes enlargement and varicose veins. In addition, there are other factors that gradually aggravate the varicose veins, thus causing hemorrhoids. In addition to the causes of varicose veins, there is also a relationship with local stimulation and diet, such as cold, heat, constipation or diarrhea in the anus, and also due to excessive drinking or excessive consumption of spicy, irritating food, which can lead to congestion of the venous plexus of the anus and rectum, affecting the venous blood return, resulting in a decrease in the resistance of the venous wall, and causing hemorrhoids. In addition, prolonged sitting, standing or prolonged weight-bearing can also affect venous reflux, making the hemorrhoidal veins overfilled, the tension of the vein wall decreases, and the blood vessels tend to bruise and dilate, thus forming hemorrhoids.