Curtain track system and hook structure thereof

The utility model belongs to the technical field of curtains, and discloses a curtain track system and a hook structure thereof, which comprise a hook body, and a first roller and a second roller arranged on two sides of the hook body, a mounting hole is formed in the hook body, and a limiting convex ring is arranged in the mounting hole; an annular groove is formed in the end, close to the second roller, of the first roller, the first roller and the second roller are in butt joint, and the limiting protruding ring is clamped in the annular groove. During installation, the first rolling wheel and the second rolling wheel are arranged on the two sides of the hook body respectively and are close to the two rolling wheels in the direction of the installation hole, the first rolling wheel and the second rolling wheel are in butt joint, the limiting protruding ring is clamped in the annular groove, and installation of the rolling wheels and the hook body is achieved. According to the hook structure, the rollers an