Hemorrhoids located in the mucous membrane inside the anus is called “internal hemorrhoids”, located near the inner side of the anal opening is called “external hemorrhoids”, both are called “mixed hemorrhoids”. According to the symptoms of hemorrhoids and the degree of harm to human health, internal hemorrhoids can be divided into three phases: Ⅰ stage, painless, mainly in order to blood, discharge, itching mainly; Ⅱ stage, there is blood in the stool, hemorrhoids with the prolapse of defecation, but can be self-recovery; Ⅲ (also known as the late stage), prolapse of internal hemorrhoids outside the anus or every time you defecate outside the anus, can not be self-recovery, you must be back to the hand. Stage IV, internal hemorrhoids prolapse out of the anus and cannot be returned to the inside of the anus. This is the most serious condition of internal hemorrhoids.