The appearance of bumps at the anal opening with itching needs to be noted as the following: 1. Hemorrhoids, whether external or internal, and the occurrence of impaction when they swell out from the anus are likely to appear in the anus. As hemorrhoids stay in the anal opening for a long time, especially internal hemorrhoids that are embedded, anorectal mucus will ooze out and repeatedly stimulate itching of the anal skin. The itching symptoms usually last for a short time, as long as you do a good job of cleaning, pay attention to diet and appropriate anti-inflammatory, the symptoms will be more obviously improved. 2, due to perianal eczema, there will be small blister-like objects, the itching of the anal opening and perianal skin will be more obvious and last longer, after scratching, there will be local breakage and inflammation. 3, caused by acral warts, there will be itching and painful sensation. It also does not exclude that it is caused by conditions such as perianal abscesses, it is recommended to seek medical treatment in a timely manner.