The invention discloses a mechanical-interlocking car stopping structure which is applied to a track car provided with a lifting type disconnected track. When starting to descend to be disconnected with a fixed track, the lifting track starts to release the pulling action on a braking wire component; at the moment, a swing pushing member of a swing frame allows the swing frame to swing upwards, and an anti-collision block is enabled to be higher than a path, which a car body passes by during forward moving, to block the front side of the car body, so that the anti-collision block blocks the front side of the car body once the fixed track is disconnected with the lifting track, and the emergently uncontrolled car body can be stopped to avoid running out of the fixed track to cause danger during disconnection between the fixed track and the lifting track; according to the mechanical-interlocking structure, once the lifting track is disconnected with the fixed track, the swing frame can swing upwards in linkage to enable the anti-collision block to block the front side of the car body, and parking safety of the track car at a parking point of the fixed track during disconnection between the fixed track and the lifting track can be guaranteed, so that the mechanical-interlocking car stopping structure is reasonable in structure and safe to use.