The invention discloses a garbage truck carriage with a slide cover door and a side-mounted garbage truck. The garbage truck carriage comprises a carriage body and a driving mechanism; a feeding bin is arranged at one end, near the head of the garbage truck, of the carriage body; the feeding bin has a feeding port; the carriage body is wrapped with the slide cover door slidingly connected with the carriage body; the slide cover door covers the feeding bin; the driving mechanism is in driving connection with the slide cover door; and the driving mechanism adopts two-way driving with the driving direction parallel to the length direction of the carriage body. The garbage truck carriage improves the carriage closure and beauty of the side-mounted garbage truck.