An injection molding system including an injection molding apparatus that performs injection molding, and a conveyor apparatus configured to insert a mold through an opening of the injection molding apparatus, wherein the improvement to the injection molding system includes the injection molding apparatus further comprising a first door configured to restrict access via a first opening when a first door is closed and a second door configured to restrict access via a second opening when a second door is closed, and a controller configured to start injection molding with the mold in a case where the first door is partially opened and the second door is closed.