There are many reasons for the presence of bumps on the testicular skin, the common ones are as follows: 1. Infection on the scrotal skin, this infection can be caused by bacteria or fungus, it is necessary to choose sensitive antibiotics for treatment under clear diagnosis, after the inflammation is controlled, the bumps will disappear on their own; 2. The presence of corresponding lesions on the scrotal skin, such as eczema, eczema-like cancer, etc., it is necessary to choose suitable drugs or surgery The presence of allergic factors, due to the presence of certain allergens, leads to the appearance of corresponding skin lesions, which need to be removed and treated with sensitive anti-allergy drugs; 4. The presence of lipomas, neurofibromas, sebaceous cysts, etc. in the scrotal skin may also lead to bumps.