The invention discloses an image defective pixel detection method and apparatus. The method includes: obtaining an N*M pixel block of an image, arranging all pixel points in the pixel block in sequence to obtain a pixel value sequence, calculating a median of the pixel value sequence, and obtaining a pixel median; determining a specified small pixel value and a specified large pixel value from the pixel value sequence, calculating a first difference, and determining the pixel type of a current pixel point and calculating a second difference according to the relation between the current pixel point and the pixel median; and determining whether the current pixel point is a suspected defective pixel by determining whether the quotient of the second difference and the first difference is greater than a first preset error. The defective pixel is checked based on the attribute of the defective pixel of the image, compared with the conventional defective pixel detection method, the hardware area is reduced, pixel points of the image are checked one by one, more suspected defective pixels can be discovered, and the detection efficiency of the defective pixels is improved.