The prolapse of hemorrhoids is due to the fact that when internal hemorrhoids grow to a certain extent, the nucleus of the hemorrhoid will prolapse after defecation. As the hemorrhoid nuclei gradually increase in size, there will be the phenomenon of not being able to retract after prolapse, which will lead to the prolapse of mixed hemorrhoids and incarceration, which may occur. What comes out is usually the hemorrhoid core of internal hemorrhoids, external hemorrhoids originally grow outside the anus, there is no phenomenon of prolapse. Therefore, hemorrhoids prolapse is because the internal hemorrhoids grow to a certain extent and impede defecation, in the process of defecation, will be discharged with the stool to the outside of the anus, at first the symptoms are relatively light, can be self-contained, that is, it can be retracted inside the anus, but with the hemorrhoidal nuclei continue to grow, it is possible to be dislodged to the outside of the anus, which is the hemorrhoidal nuclei prolapse. With the gradual severity of the symptoms, there is also the possibility of coming out of the sphincter muscle contraction, resulting in stuck in the outside of the anus, thus appearing in the internal hemorrhoid embedded.