Installation Structure for Track Lever of Seat Rail

The present disclosure relates to a track lever assembly structure of a seat, which is capable of preventing in advance a lock release phenomenon due to a problem that a rear seat passenger's foot is caught by causing an assembly position between a track lever and a locking assembly to be set within the seat rail, and of changing an assembly structure for interlocking operation between the track lever and the locking assembly into a fastening structure having an interlocking operation method using a holder hinge-coupled to the inside of a moving rail, thereby minimizing the number and weight of related parts and simplifying an assembly process.