A positive test for Chlamydia trachomatis means that there is a Chlamydia trachomatis infection in the body. Chlamydia trachomatis infections can occur in a variety of locations, with the primary sites of infection being the conjunctiva of the eye and the genital and urinary systems. Eye infections include trachoma and inclusion body conjunctivitis. The specific manifestations may vary and the degree of damage varies. When trachoma is present, there are no obvious symptoms during the incubation period, followed by an acute phase of ocular manifestations with pain, itching, burning sensation, foreign body sensation, photophobia, and increased purulent discharge. Early diagnosis is based mainly on clinical features, such as characteristic conjunctival congestion, vascular blurring, a large number of follicles in the eye can be seen, and corneal vascular opacification will appear as time grows. In advanced stages, scar tissue can form in the lid conjunctiva, and even serious complications such as entropion of the eyelid, impingement of the eyelid, adhesion of the lid bulb, and corneal clouding can occur. Inclusion body conjunctivitis may present with symptoms similar to trachoma, also with the presence of conjunctival follicles, but the symptoms are relatively mild and do not cause corneal scarring. The gold standard for diagnosis is to scrape conjunctival cells for pathogenic testing, and if the result is positive for Chlamydia trachomatis, the diagnosis is clear. Chlamydia trachomatis infection may also occur in the urinary tract and the genital system, with the main manifestations being symptoms of urinary tract infection, such as urinary tract irritation, and the genital system, which may have abnormal discharge and itchy, painful discomfort. A positive Chlamydia trachomatis may be evident in the discharge test. In case of positive Chlamydia trachomatis, antibiotic type medication should be administered as soon as possible. Depending on the location and severity, early treatment can provide significant relief in most cases.