The present invention relates to a mounting structure for a direct injection fuel rail. Specifically, a mounting structure 120 for a direct injection fuel rail comprises a mount unit 124 and an injector cup 122 combined with a main pipe 110, wherein the injector cup 122 and the mount unit 124 are connected to and integrated with each other via a bridge 126, wherein the injector cup 122 is bonded to the main pipe 110, and wherein the mount unit 124 is separated from the main pipe 110. As such, concentration of stress due to displacement may be prevented, resistance against fatigue fracture may be increased, thermal deformation and additional concentration of stress may be prevented, manufacturability may be improved, and precise assembling positions may be easily ensured.