Abstract: Objective: When using existing train dynamic testing method, it is necessary to allocate a dynamic testing buffer zone between every two parking lots in a doubletrack parking garage, which incurs high costs and consumes significant resources. To address this issue, a safety protection method for dynamic testing of urban rail transit FAO (fully automatic operation) control system based on virtual partitioning is proposed. Method: Building upon existing safety protection procedures and methods, combined with speed limit curve protection measures, this method employs virtual partitioning to divide the sleepwake area into WTP (wakeup testing protection zone) and DTM (dynamic testing management zone), thus ensuring the safety protection of dynamic testing authorization and process. Based on the scenarios of intersecting or nonintersecting DTM, special cases involving the inclusion of other protection objects in DTM are specifically addressed to explain the safety protection process for train dynamic testing authorization. The safety protection content and process during dynamic testing are analyzed. The WTP is defined to prevent the test train from deviating from the designated testing position, with the onboard controller ensuring that the train remains within the dynamic testing range. DTM is configured to prevent conflicting routes and other trains from entering the protection range of the test train, with the zone controller authorizing the movement of other trains up to DTM boundary. Result & Conclusion: The design approach using virtual partitioning for safety protection eliminates the need for a buffer zone between every two parking lots in a doubletrack parking garage. This shortens the distance between the test train and the adjacent section of parked trains, improving operational efficiency while saving costs associated with civil engineering and signaling equipment.