Currently, negative and positive are widely used in clinical practice to indicate the results of a certain test. Positive and present, negative indicates no, i.e. not present. Positive, indicating a reaction with a reagent, indicates the presence of the corresponding antigen in the body fluid. Negative, indicating no reaction with the reagent, means that the corresponding antigen is not present in the body fluid. The results of a test or report are often expressed as (+), (-). Here (+), (-) are not symbols for addition or subtraction in mathematical calculations, but are used to indicate positive or negative results. In some of the routine tests for women, there are also many that are expressed as negative, positive. A few are briefly introduced, for example: 1. Blood HCG test. If the test result is positive, it means pregnancy, and a specific value is usually given; if it is negative, it means no pregnancy. 2. Routine white belt test. The routine white belt examination includes vaginal pH, vaginal cleanliness, vaginal microorganisms, etc. If it is positive for leukocytes, it means bacterial infection; if it is positive for trichomonas, it means trichomonas infection; if it is positive for mycobacteria, or fungus, it means mycobacterial infection. If the symptoms of leukorrhea are combined with abnormalities, such as high volume, odor, and vulvar itching, combined with the positive part of the test, the diagnosis is vaginitis of some nature, which requires symptomatic drug treatment. The presence of a positive test does not necessarily mean that the disease is diagnosed, but should be combined with the specific clinical symptoms.