A small bag growing on the labia minora can be caused by folliculitis, condyloma acuminatum, genital herpes, cysts, eczema and so on. 1. Folliculitis: secondary infection of localized hair follicles on the labia minora may cause folliculitis, resulting in a small bag on the labia minora. 2. Condyloma acuminatum: Sexually transmitted diseases caused by human papilloma virus infection may also cause a small bag on the labia minora, which will later form cauliflower-like, papillomatous organisms. 3. Genital herpes: Genital herpes caused by herpes simplex virus infection may also cause a pouch on the labia minora in the early stages. 4. Cysts: Sebaceous cysts, vestibular cysts, etc., can also cause a small bag on the labia minora. 5. Eczema: Inflammatory reactions caused by internal and external stimuli can also lead to the symptom of a pouch on the labia minora. There may be other reasons for the growth of a small bag on the labia minora, and it is necessary to go to the hospital in time for examination and treatment as prescribed by the doctor.