Swellings that look like small blisters after glans mucosal injury may be related to tissue fluid exudation, bacterial infection, viral infection and other reasons. 1. Tissue fluid exudation: mucosal injury can make tissue fluid exudation, which can form small blisters. 2. Bacterial infection: If the mucous membrane of the glans is damaged and then infected by bacteria causing glans penis, it can lead to pimples and papules at the glans. 3. Viral infection: Infection with herpes simplex virus after mucous membrane injury can cause genital herpes, manifested as small blisters. It is recommended that people who have swollen like small blisters after mucous membrane injury of the glans go to the hospital in time to clarify the cause and carry out standardized treatment under the guidance of the doctor to avoid delaying the condition.