Oxytetracycline is an antibiotic that is generally indicated for the treatment of rickettsial, mycoplasma and chlamydia infections, as well as cervicitis and trachoma. Although hygromycin has certain therapeutic effects, it also has certain disadvantages, because hygromycin is damaging to liver and kidney functions, and according to the survey results, children taking this drug can cause symptoms such as yellowing of teeth, enamel dysplasia and dental caries, so hygromycin is no longer used as a regular antibacterial drug. Patients are advised to use this drug under the guidance of a doctor and not to use it blindly so as not to cause unnecessary harm to the body, especially children must use it with caution and can consider using other drugs instead.