Usually it is necessary to do bacterial culture, secretion smear, blood routine and other laboratory tests, but also with clinical symptoms to determine whether the circumcision is bacterial or fungal. There are many types of glans penis, if you want to determine whether glans penis is caused by bacteria or fungi, you need to judge according to the following methods. 1. Laboratory examination: patients need to cooperate with the doctor to carry out bacterial culture and secretion smear examination, which can effectively clarify the pathogenic microorganisms of infection. In addition to this, you also need to do routine blood tests, if there is an elevated white blood cell count, you need to consider the existence of infection. 2. Combined with clinical symptoms: to determine the pathogen also need to be combined with clinical symptoms, usually, bacterial glans phimosis patients will appear local redness, swelling, heat, pain and other symptoms; if it is fungal glans phimosis, on the basis of which there will be a spot cheese-like secretion, and pinpoint-sized red papules and so on. For patients with glans phimosis, it is necessary to do further relevant examinations to clarify the specific pathogenic microorganisms of infection, and actively cooperate with the doctor’s treatment, in order to strive for early recovery.