Perianal eczema in babies may be related to dietary factors or may be caused by fecal irritation and other reasons. 1. Dietary factors: commonly found in allergic babies, after consuming food such as beef, lamb, fish and shrimp, it is likely to cause an allergic reaction, which may induce perianal eczema. 2. Fecal stimulation: common in small babies, due to the age of the month is small need to be cared for by parents, if the baby urination, defecation, parents did not find in time, did not clean up in time, resulting in perianal long time by fecal stimulation, it may cause perianal eczema. Baby perianal eczema, may also be related to other factors, it is recommended to take the child to the regular hospital as soon as possible, after diagnosis of triggers, by the doctor to guide the treatment and conditioning.