If categorized according to the depth of involvement, there are superficial and deep. If categorized according to the causative organisms, the common ones are Staphylococcus aureus sexual, gram-negative bacteria, fungal and parasites. Folliculitis is a common inflammatory skin disease, which needs to be considered on a case-by-case basis since it can be categorized into different types based on different criteria. If it is categorized according to the depth of skin involvement, it can be divided into superficial folliculitis and deep folliculitis, while deep folliculitis involves the entire hair follicle, which is relatively more serious. In addition, it can also be categorized according to the infecting microorganisms, and the common types are Staphylococcus aureus folliculitis, gram-negative bacteria folliculitis, fungal folliculitis, and parasitic folliculitis. Of these, fungal folliculitis can be categorized as Malassezia folliculitis, Scleroderma folliculitis, and Candida folliculitis, while parasitic folliculitis is mainly helminthic mite folliculitis. For patients with folliculitis, they need to actively cooperate with the doctor’s treatment and strengthen daily life management to prevent aggravation of folliculitis.