Gonorrhea cannot be diagnosed by drawing blood for physical examination. Gonorrhea is a purulent inflammation of the urinary and genital organs caused by gonococcal infection. It can be diagnosed through tests such as urogenital secretion smear, gonococcal culture and nucleic acid test. 1. Smear of secretion, take female vaginal secretion or male prostate fluid, make a smear for microscopic observation, it can see a large number of gram-negative diplococci in the white blood cells, which is a common auxiliary diagnostic examination. 2. Gonococcal culture, after oxidase test and sugar fermentation reaction positive confirmation of gonococcus, which is an important basis for the diagnosis of gonorrhea. 3. Nucleic acid test, the application of polymerase chain reaction (PCR) technology, the detection of gonococcal nucleic acid in the specimen is positive, this method is a genetic diagnostic technology, has a very high sensitivity and specificity, is the evidence of gonorrhea diagnosis. In short, physical examination blood can not diagnose gonorrhea, the existence of gonorrhea-related symptoms of patients, as soon as possible to go to the regular hospital venereal disease department consultation, early diagnosis and early treatment.