The invention belongs to the technical field of road traffic safety, and discloses a human reliability analysis (HRA)-based risk quantification method of a tunnel evacuation procedure. Starting from humans, the emergency evacuation procedure of personnel in a tunnel is provided; risk possibility quantification is carried out on each action in an emergency evacuation process of the personnel to obtain human failure probability; a consequence table is adopted to quantificationally analyze severity degrees of consequences which may be caused by failing of each action; finally, the human failure probability and consequence severity are combined to carry out risk quantification on each evacuation action; and ultimately, quantification values are taken as bases, a relevant measure is adopted ina targeted manner according to sizes of the risk quantification values to prefect and improve tunnel operation and management, escape risks are reduced, and tunnel operation safety is improved.