Abstract： Objective： To observe the effect of the method of removing constraint and stagnation on visual function in patients with early anterior ischemic optic neuropathy(AION). Methods：Retrospective analysis was performed on 27 cases with early AION(33 eyes in total) treated with the method of removing constraint and stagnation and the method of unblocking orifices to improve vision in outpatient department from April 2015 to June 2018. The best corrected visual acuity(BCVA)， visual field，retinal nerve fibers layer thickness around optic disc(RNFLT) and visual evoked potential(VEP) were examined two weeks after treatment and two months after treatment，and the clinical effect was evaluated. Results：After two weeks of treatment，the BCVA，mean deviation(MD) and mean sensitivity(MS) of early AION patients were improved，there being no significant difference(P＞0.05). After two months of treatment， the BCVA， MD and MS were significantly improved when compared with those before treatment，differences being significant(P＜0.05). After two weeks of treatment，in terms of the improvement of the thickness of RNFL， the thickness of above， temporal- side， inferior- side， nasal- side RNFL and average thickness of RNFL was respectively thinner than that before treatment， there being no significant difference(P＞ 0.05). After two months of treatment，in addition to the thickness of inferior-side RNFL，the thickness of above，temporal-side and nasal-side RNFL as well as average thickness was significantly thinner than that before treatment，differences being significant(P＜0.05)，and the thickness of inferior- side RNFL was thinner than that before treatment，the difference being significant(P＜0.05). After two weeks of treatment， in terms of the improvement of VEP， the P100 wave latency was shortened when compared with that before treatment，there being no significant difference(P＞0.05). After two months of treatment，the P100 wave latency was significantly shortened when compared with that before treatment，the difference being significant(P＜0.05). After two weeks of treatment， the amplitude of P100 wave was increased， there being no significant difference(P＞0.05). After two months of treatment，the amplitude of P100 wave was significantly increased，the difference being significant(P＜0.05). The total effective rate was 81.5% (P＜0.05). Conclusion： The method of removing constraint and stagnation and the method of unblocking orifices to improve vision can effectively improve the visual function of early AION patients.