Abstract: In order to explore the influence of the opening angle of the door leaf on personnel evacuation, multiple factors such as the opening angle of door leaf, installation mode, installation position, passage width and opening state were selected as the research object for analysis. The personnel evacuation simulation was carried out in Massmotion evacuation simulation software. The evacuation efficiency under the interaction of door leaf opening angle and different factors was explored, and the relationship between evacuation efficiency and evacuation time was summarized. The results showed that the evacuation time was greatly affected by the installation mode of the door leaf with the change of the opening angle of the door leaf; With the increase of the opening angle of the door leaf, the relative distance of the installation position and the width of the passage, the evacuation time was shortened to a certain extent, and the opening state of the door leaf was also an important factor affecting the evacuation. The research results offer some important insights into the design of the exit structure of the building and the safe evacuation management of personnel.