The invention discloses a manned lifting mechanism for a buried transformer substation. The buried transformer substation comprises a pit established underground, a lifting platform arranged inside the pit, a substation system mounted on the lifting platform and a human pithead formed on the ground and located on the side of the pit for maintenance personnel to enter and exit the pit. The manned lifting mechanism comprises a sliding groove arranged on the side wall of the pit and extends from the human pithead to the inside of the pit, a bearing platform arranged on the sliding groove in a sliding way and a driving assembly for driving the bearing platform to slide. A sliding assembly is arranged on one side close to the sliding groove of the bearing platform and the bearing platform is arranged on the sliding groove in a sliding way through the sliding assembly. According to the manned lifting mechanism for a buried transformer substation, the bearing platform can slide up and down along the sliding groove by arranging the sliding groove on the side wall of the pit and arranging the bearing platform, thereby driving maintenance personnel to automatically ascend and descend, savingtime and labor and meanwhile reducing potential safety hazards.