Anal white rice grains may be due to anal folliculitis, condyloma acuminatum, perianal eczema and so on. 1. Anal folliculitis: anal folliculitis is mostly due to prolonged sitting, resulting in the lack of sufficient local air permeability, it is easy to appear anal folliculitis. If follicular suppurative inflammation occurs in the perianal skin, there will be prominent red papule-like milia in the early stage, and with the emergence of pus, it will show white milia. 2. Condyloma acuminatum: If the local skin mucosa around the anus has abnormal proliferation, you first need to exclude whether it is anal condyloma acuminatum. After the infection of acromegaly, the localization of the anus will appear different degrees of edema, and even the swelling of cauliflower pattern, which may be granular in the early stage. 3. Perianal eczema: Perianal eczema is mostly caused by insufficient perianal cleanliness or perianal moisture. It will lead to local skin granular changes, obvious itching symptoms, if you keep scratching the skin with your hands, but also easily lead to skin breakage, some patients will be secondary to infection. The phenomenon of anal white rice particles, need to go to the anorectal department, a clear diagnosis, under the guidance of a professional doctor to give reasonable formal treatment.