Objective: It analyzes the problem of accessibility of health care caused by the prolonged perceived waiting time of or- dinary emergency patients with behavioral economics and provides suggestions. Methods: It explains the mechanism of the perceived extension of waiting time based on the prospect theory, constructs an analysis model of the waiting time experience of emergency pa- tients, then proposes optimization strategies. Results: The problems of emergency procedures make patients put themselves in the frame of loss choice, resulting in cognitive impairment of waiting time. Patients take the state before medical treatment as the reference point, leading to irrational waiting time investment. The underestimation of the probability weight of long waiting time will aggravate the negative emotions of patients and prolong the subjective waiting time. Conclusion: By changing the selection frame, intervening the reference point and adjusting the probability weighting bias, the waiting cognitive management of emergency patients is helpful to improve the overall evaluation of patients’visit time.