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目的：探讨首发精神分裂症患者及其一级亲属注意返回抑制特点。方法将31例首发精神分裂症患者设为患者组，29名健康一级亲属设为亲属组，30名健康志愿者设为对照组。分别对3组被试进行注意返回抑制测试。结果3组不同线索开始呈现到靶子的时间间隔水平靶子同侧反应时间均显著长于异侧反应时间（P＜0．01），均存在返回抑制；3组所有线索开始呈现到靶子的时间间隔水平靶子同侧与异侧反应时间依次为：患者组＞亲属组＞对照组。结论首发精神分裂症患者及其一级亲属存在返回抑制功能障碍，这可能是精神分裂症的遗传易感性指标。“,”Objective To explore attention recurrent inhibition characteristics of first‐episode schizophrenia patients and their first‐degree relatives . Methods Thirty‐one first‐episode schizophrenics were assigned to patient group ,29 healthy first‐degree relatives to relative group ,and 30 healthy volunteers to control group .Attention inhibition of return (IOR) tests were conducted among 3 groups .Results Reaction times of 3 groups at different SOA levels on the same side were significantly longer than those on the opposite side (Prelative>control group .Con‐clusion First‐episode schizophrenia patients and their first‐degree relatives have IOR dysfunction .IOR dysfunction may be genetic susceptibility index of schizophrenia .