Abstract: ［Objective］ The centralized image interpretation mode in urban rail transit security inspection can significantly reduce labor costs, improve inspection efficiency, and enhance the inspection intelligence level. However, there is a lack of standards for image interpretation staffing, necessitating corresponding research to provide reliable guidance for the image interpretation center construction. ［Method］ The concept, significance, and influencing factors of centralized image interpretation in security inspection are introduced. Based on queuing theory and considering the business process of centralized image interpretation as well as the on-site operational management requirements at stations, a passenger security inspection queuing model is constructed, thus determining the configuration requirements for centralized image interpretation center seats. With reference to the configuration of station security checkpoints on Suzhou Metro Line 3, and utilizing the inspection queuing model, the configuration scale of image interpretation platform is calculated. ［Result & Conclusion］ According to the queue theory-based staffing model for centralized image interpretation, at least 7 image interpreters are needed during peak hours, reducing the number of interpretation post by 30%. During off-peak periods, at least 3 interpreters are needed, achieving a 70% reduction in the number of interpretation post. The service duration of security inspection checkpoints at station is 18 hours, and the overall reduction rate of the interpretation post number is 58%, demonstrating a significant reduction in staffing requirements.