Several studies have shown cognitive impairment such as memory, perception and learning skill during ascent to high altitudes. However, few studies have directly investigated the effect of high altitudes exposure on attention-a high-level cognitive function. Remote ischemic conditioning (RIC) is a noninvasive and easy-to-use neuroprotective strategy, It has been proven to be an effective strategy for neuroprotection in ischemic stroke and chronic cerebral ischemia patients.