The invention belongs to the technical field of recovery and utilization of steel lining plastics, and provides a steam bath recovery treatment method for steel lining plastics. The steam bath recovery treatment method comprises: carrying out steam bath treatment on steel lining plastics to separate plastics and steels in the steel lining plastics to obtain plastics and steels; and respectively and sequentially carrying out cooling, washing and drying on the obtained plastics and the obtained steels, and recovering the plastics and the steels. According to the present invention, with the method, steels and plastics in waste steel lining plastics can be separated so as to achieve the recycling of resources.