The embodiment of the invention relates to the technical field of image detection, and particularly relates to a defective pixel detection method and device and electronic equipment. According to themethod, an original image is split into a plurality of single-channel images and the single-channel images are marked, then the marked single-channel images are combined to obtain a target image, pixels marked as preset marks are detected from the target image to serve as defective pixels, and therefore the defective pixels in the original image can be accurately detected.