The invention discloses an imaging method and imaging device of an image sensor and an electronic device. The image sensor includes a pixel array and a micro lens array arranged on the pixel array. Each four adjacent pixels in the pixel array include a red pixel, a green pixel, a blue pixel and an infrared pixel. The micro lens array includes a plurality of micro lens. Each micro lens covers one pixel correspondingly. The imaging method includes reading output of each pixel in the pixel array; performing interpolation treatment on the output of each pixel so as to obtain a red component, a green component, a blue component and an infrared component corresponding to each pixel; acquiring the type of a current shooting scene; determining three-primary color output values of each pixel according to the type of the current shooting scene so as to output images according to the three-primary color output values of each pixel. By adopting the imaging method, image luminance during dark scene shooting is improved substantially and image color shift in non-dark scene shooting is avoided, so that user experience is improved.