This system can automatically shift and import trays and baskets with strain bottles into sterilizer and automatically export them after sterilization. The automatic in and out function is realized by a conveying device set in sterilizer and some external configurations including conveyor, shifting machine, and basket-carrying machine. The efficiency and automation are significantly improving in the sterilizing process. Empty trays are stacked and separated on conveyor,then delivered into basket-carrying machine rapidly for recycling.