Embodiments of the present invention disclose a display method and a display device. 2D display is performed when an input source signal is a 2D image signal, and 3D display or 2D display is performed according to requirements and preferences of a user when the input source signal is a 3D image signal. Problems of blinking and tailing which are present in an existing display device are resolved, an edge blur phenomenon of images for fast motion pictures is illuminated, the “illusion” which is formed due to a visually temporary retention of human eyes is corrected, and picture stability is effectively improved; and a crosstalk phenomenon caused by simultaneous displaying of the left-eye image and the right-eye image in an existing active 3D technology is eliminated.