There is no small prescription for urinary tract infections, and erythromycin can be used if the infection is caused by sensitive bacteria such as mycoplasma. Urinary tract infection is the most common infectious disease belonging to the urinary system, it is recommended to do a urine culture to determine the causative organisms, and at the same time to carry out drug sensitivity test, according to the drug sensitivity test, choose sensitive antibiotics for anti-infection treatment. If the urinary tract infection is caused by sensitive bacterial infection such as mycoplasma chlamydia, it can be treated with macrolide antibiotics such as erythromycin. If it is other bacterial infection, such as gram-negative bacillus, you can use cephalosporin, levofloxacin and other antibiotics to treat. Urinary tract infection should go to the regular hospital in time for examination, to determine the causative bacteria, under the guidance of the doctor to use medication, to avoid their own abuse of drugs, to avoid causing adverse reactions.