The causes of glans are closely related to a variety of factors, mainly divided into infectious factors and non-infectious factors: First, infectious factors, under normal circumstances, there are a large number of bacteria, yeast parasites within the foreskin sac, the body local or systemic resistance is weakened, microorganisms will take advantage of the opportunity to enter, and then turn around to become a disease-causing pathogen. Second, non-infectious factors, mainly urine or foreign substances, such as condoms and other stimulation of the glans and caused by glansitis, friction and trauma may also trigger glansitis, and the foreskin is too long, the foreskin is not clean, resulting in the accumulation of foreskin scale, etc., can cause damage to the glans and prepuce mucous membrane of the glans, which aggravates the infection of a variety of pathogenic bacteria. Usually in daily life should pay attention to personal hygiene, timely cleaning to keep the local clean, clean, in order to avoid the occurrence of glans.