５９例诊断为耳部化脓性感染的门诊病人按随机分组，双盲法给药，分别接受氟嗪酸滴耳剂和氯霉素眼液滴耳治疗，显效率分别为７１．１％和３８．１％，有显著差异（Ｐ＜０．０１）．包括两名儿童在内的所有病人均未出现头晕、耳鸣、耳聋加重等副反应。２９例细菌学结果显示，氟嗪酸组细菌阴转率为９４．７％，远高于氯霉素组（５５．６％）。 Fifty-nine outpatients diagnosed with purulent ear infections were randomly assigned to receive double-blind blinded treatment with oral and / or chloramphenicol, respectively. The effective rates were 71.1% and 38%, respectively .1%, there was a significant difference (P <0.01). All patients, including two children, had no side effects such as dizziness, tinnitus and deafness. The results of 29 bacteriological studies showed that the negative conversion rate of bacteria in the group of triflum acid was 94.7%, much higher than that in the group of chloramphenicol (55.6%).