A stopping structure and a server having the same are provided. The server includes a rack, at least one chassis, and a stopping structure. The chassis disposed in the rack moves relative to the rack. The stopping structure is disposed between the rack and the chassis. The stopping structure includes an actuator, a guiding element, and a damper. The actuator is disposed on the chassis. The guiding element is disposed on the chassis, and the actuator moves parallelly between a first position and a second position along the guiding element relative to the chassis. The damper is disposed in the rack. When the chassis is moved out from the rack and the actuator is at the first position, the damper is interfered with the actuator. When the chassis is moved out from the rack and the actuator is at the second position, the damper is not interfered with the actuator.