Objective To analyze the antibiotic resistance of ureaplasma urealyticum(UU) in vitro in Yangjiang,and instruct the clinical treatment for the ureaplasma urealyticum infection.Methods 538 secretion samples of urethra and cervix were collected and cultured ureaplasma urealyticum in vitro,the drug sensitive test of UU from 253 patients was conducted and detected their drug resistance.Results The 253 positives cases were found in 538 samples.The drug sensitive test results were:the highest sensitivity rates were clarithromycin(731%) and roxithromycin(679%).The resistance rates of rest drugs were azithromycin(771%),josamycin(708%),minocycline(664%),ciprofloxacin(538%),sparfloxacin(435%),doxycycline(423%),the total resistance rate was 489%.Conclusion To treat the ureaplasma urealyticum infection,the first choices are clarithromycin and roxithromycin.