The utility model discloses an assembled track structure, it includes rail, fastener, prefabricated track board, buffering adjustment bed course and prefabricated base, prefabricated base sets up on tunnel floor, buffering adjustment bed course set up in between prefabricated track board and the prefabricated base, be used for doing assembled track structure puies forward ammunition feed nature, the rail passes through the fastener is fixed to be arrived on the prefabricated track board. Its structural design is succinct with the construction, can realize construction procedure ization, productionization, and construction assemblyization and construction mechanization have wide application prospect in the urban rail transit field.