A method of unlocking an electronic device, an unlocking device and system and a storage medium are provided. The method includes: acquiring at least one image to be authenticated, in which the image to be authenticated is an RGB image or an infrared image; obtaining an RGB image authentication result of the image to be authenticated by RGB object authentication of the image to be authenticated in a case where the image to be authenticated is the RGB image, and obtaining an infrared image authentication result of the image to be authenticated by infrared object authentication of the image to be authenticated in a case where the image to be authenticated is the infrared image; and determining whether to unlock the electronic device according to at least one of the RGB image authentication result and the infrared image authentication result.