Minocycline is used to treat Mycoplasma urealyticum in adults, the first day’s dose is 200mg, then 100g every 12 hours, or 50 mg every 6 hours, the whole course of treatment is 2 weeks. 1. Minocycline is a new semi-synthetic tetracycline preparation, which can be used for infections caused by pathogens such as Staphylococcus, Streptococcus, Pneumococcus, Neisseria gonorrhea, Escherichia coli, Klebsiella, Treponema pallidum, Mycoplasma, Chlamydia and other pathogens, and can be used for 14 days of treatment according to the condition, with 7 days of discontinuation of the drug after the treatment for reviewing urine culture and other relevant examinations. 2. Minocycline is contraindicated for those who are allergic to tetracyclines, and should be used with caution in patients with hepatic and renal insufficiency, inability to eat, and deterioration of systemic status, as it can cause dizziness, lethargy, etc., automobile drivers, those engaged in the operation of dangerous machines and overhead work should avoid taking it, and it will cause esophageal ulcers when it is retained in the esophagus and disintegrates, so it should be drunk more water, especially when it is taken before going to bed. The application of minocycline needs to be used under the prescription of a specialized hospital physician, and should not be used blindly.