The present disclosure provides a method and apparatus for determining the open/closed state of a knife switch, and a device, a medium and a product. The method comprises: acquiring a knife switch monitoring image; extracting image features of a plurality of preset regions in the knife switch monitoring image, wherein the plurality of preset regions at least comprise a closing position region in which a knife switch is located when same is in a closing position state and an opening position region in which the knife switch is located when same is in an opening position state; performing structural similarity comparison on the image features of the preset regions in the knife switch monitoring image with an image feature of a preset region corresponding to a preset knife switch template image; and determining the open/closed state of the knife switch according to a structural similarity comparison result.