Mobile phone accessory fitting system

The utility model relates to a mobile phone accessory attaching system which comprises a mechanical arm, a first conveying track, a second conveying track and a third conveying track, the first conveying track, the second conveying track and the third conveying track are parallel to one another, and the second conveying track is located between the first conveying track and the third conveying track. A guide rail, a jig moving on the guide rail and a driving structure driving the jig to move on the guide rail are arranged on each rail, and the mechanical arm is arranged on a preset station and used for grabbing a second workpiece on the second conveying rail and conveying the second workpiece to be assembled with a first workpiece on the first conveying rail or the third conveying rail. The first conveying track and the third conveying track extend to the next station so as to carry the assembled assembly to the next station. According to the system, the second workpiece is conveyed through the second conveyi