The examinations done by patients with balanitis mainly include: first, doctors observe whether there are redness, swelling, secretion, skin lesions, ulcers, new organisms, etc. Second, for local laboratory inspection, it is mainly to take local secretions or tissues to observe whether there are trichomonas, fungi, etc. under the microscope. In addition, do bacteriological examination, use the secretion for culture, whether there is mycoplasma, chlamydia, bacterial infection, and what are the sensitive drugs. Third, if there is a history of unclean sex, special infections, such as syphilis and AIDS, need to be checked by blood sampling.