The invention relates to the field of pesticide packaging machinery, in particular to a full-automatic material arraying mechanism. The full-automatic material arraying mechanism comprises a frame, a conveying belt and a stop plate, wherein the conveying belt is mounted on the frame, and the stop plate is arranged at the end of the conveying belt. A clamping device arranged above the conveying belt is mounted on the frame, a photoelectric device for detecting materials is arranged at the rear of the clamping device, a push device is mounted on one side of the conveying belt and arranged on the right side of the clamping device, a material platform corresponding to the push device is mounted on the other side of the conveying belt, and a push buffer device is arranged on the material platform. The full-automatic material arraying mechanism can effectively clamp bottles containing the materials to prevent toppling and skewing of the bottles by the aid of the clamping device, can more conveniently and quickly push the materials by the aid of the push device so as to be high in push speed and accurate in push and can effectively prevent toppling and skewing of the bottles by the aid of the push buffer device during the material push process. Besides, the full-automatic material arraying mechanism is convenient to mount and simple in use.