Tray positioning structure and sample analysis equipment

The embodiment of the utility model discloses a tray positioning structure and sample analysis equipment. The tray positioning structure comprises a base, a tray, a fixed seat, a first limiting piece, a second limiting piece and a positioning pin, the tray is arranged on the base and used for bearing the sample frame, and the tray is provided with a sliding path for the sample frame to slide. The fixed seat is fixedly arranged on the base; the first limiting piece is fixed to the tray and located on one side of the sliding path so as to limit the sample frame. And the second limiting piece is fixed on the fixed seat and is positioned on the other side of the sliding path so as to limit the sample frame. The positioning pin is fixed on the fixing seat and used for abutting against the tray. According to the tray positioning structure provided by the embodiment, the assembly precision among the first limiting piece, the sample frame and the second limiting piece is relatively improved, and the phenomenon that t