An electronic device , comprising: a device body , a screen mounted on a front side of the device body , a photo-sensing module comprising a light emitter and a light receiver , the light emitter being a vertical cavity surface emitting laser or an infrared light emitting diode, an optical axis of the light emitter being obliquely arranged relative to the screen , and a direction of an emitted light from the light emitter being tilted towards a side with the screen relative to the device body , wherein the emitted light from the light emitter is emitted from a preset side surface of the device body and tilted towards the side with the screen , characterized in further comprising a light guide member having a first refracting surface and a second refracting surface, wherein the first refracting surface corresponds to a position of the light emitter and the second refracting surface corresponds to the preset side surface , such that the emitted light enters the light guide member through the first refracting surface and exits out through the second refracting surface in a manner of a refracted light, and an angle between the refracted light and the preset side surface is less than an angle between the emitted light and the preset side surface , and a light absorber , the light guide member comprising a light-leakage surface except the first refracting surface and the second refracting surface, and the light absorber being fitted with the light-leakage surface, wherein the light guide member is arranged between the photo-sensing module and the preset side surface , and the light absorber is arranged on an inner side wall of the device body corresponding to the light-leakage surface, and wherein the light guide member fully fills a gap between the photo-sensing module and the preset side surface . a device body , a screen mounted on a front side of the device body , a photo-sensing module comprising a light emitter and a light receiver , the light emitter being a vertical cavity surface emitting laser or an infrared light emitting diode, an optical axis of the light emitter being obliquely arranged relative to the screen , and a direction of an emitted light from the light emitter being tilted towards a side with the screen relative to the device body , wherein the emitted light from the light emitter is emitted from a preset side surface of the device body and tilted towards the side with the screen , characterized in further comprising a light guide member having a first refracting surface and a second refracting surface, wherein the first refracting surface corresponds to a position of the light emitter and the second refracting surface corresponds to the preset side surface , such that the emitted light enters the light guide member through the first refracting surface and exits out through the second refracting surface in a manner of a refracted light, and an angle between the refracted light and the preset side surface is less than an angle between the emitted light and the preset side surface , and a light absorber , the light guide member comprising a light-leakage surface except the first refracting surface and the second refracting surface, and the light absorber being fitted with the light-leakage surface, wherein the light guide member is arranged between the photo-sensing module and the preset side surface , and the light absorber is arranged on an inner side wall of the device body corresponding to the light-leakage surface, and wherein the light guide member fully fills a gap between the photo-sensing module and the preset side surface . <EOS>