1, necrosis: hemorrhoid nucleus embedded in the anus outside, due to a series of pathological changes, so that the local metabolites accumulate, further aggravating the local edema of the anus, aggravating the embedded hemorrhoid nucleus, which is to a vicious circle. So the hemorrhoid is embedded for a long time, necrosis is bound to occur. The necrosis at this time is often confined to the mucous membrane part of the hemorrhoid nucleus, but there are also cases of invasion of other parts of the body. There are reports from abroad that the thrombus in the hemorrhoid nucleus spreads upward and the necrotic area extends to the rectal wall, resulting in severe sepsis in the pelvis. This situation is rare, but must be given great attention by clinicians. 2.Infection: After the hemorrhoid nucleus is embedded, there are different degrees of infection, and the patient has symptoms such as urgency, anal swelling, etc. At this time, the infection is mostly confined to the anal area, and if it is strongly reset, it is easy for the infection to spread, causing submucosal, perianal or sciatic-rectal fossa abscess, and if the dislodged bacterial embolus travels up the vein, coupled with improper use of antibiotics or not using any antibacterial drugs, it can form portal vein bacteremia Even sepsis and liver abscess can be formed. Fatal portal vein sepsis has been reported as a result of embedded hemorrhoids.