Chlamydia is a gram-negative bacterium, a microorganism larger than a virus and smaller than a bacterium. It is also a prokaryote. It is mainly categorized into Chlamydia psittaci, Chlamydia trachomatis, and Chlamydia pneumoniae. Chlamydia reproduces in cells after infection, inhibits the metabolism of infected cells, lyses and destroys cells and leads to the release of lysozyme, and the cytotoxic effect of metabolites causes metamorphic and autoimmune reactions. Genitourinary tract infection with chlamydia, caused by disease men for non-gonococcal urethritis, manifested as urethral stinging, burning sensation and urinary difficulties, a few have urinary frequency. Women are mainly non-gonococcal genitourinary tract infection, causing cervicitis, pelvic inflammatory disease, adhesions around the ovaries, tubal passage and obstruction, leading to infertility. Treatment: 1, antibiotic treatment: macrolides, tetracyclines, doxycycline can be, such as clarithromycin extended-release tablets 0.5g × 36 tablets, one tablet per day, orally, both husband and wife at the same time, during the treatment period to carry out instrumental contraception, to avoid cross-infection, but also at the same time can be added with the external washing of the drug, in order to enhance the effectiveness of treatment. 2, repeated infection of more stubborn mycoplasma chlamydia can also be added to the use of traditional Chinese medicine dialectical treatment. When pregnant women are infected with Mycoplasma, upstream infection can cause miscarriage, preterm labor, intrauterine growth retardation, low birth weight, premature rupture of membranes, embryonic arrest, fetal malformation and other adverse consequences. Therefore, the preparation for pregnancy and early pregnancy can be checked for Mycoplasma to avoid the above negative consequences.