A display processing device, a display processing method, and a display apparatus are disclosed. The display processing device includes a 3D image processing chip and a 2D image processing chip. The 3D image processing chip is configured to receive a 3D image signal, and process the 3D image signal into a 2D image signal in which left and right eye images are respectively arranged in alternate rows; and the 3D image processing chip is configured to transmit 2D image signal in which left and right eye images are respectively arranged in alternate rows obtained after processing to the 2D image processing chip, and the 2D image processing chip is configured to perform image processing on the 2D image signal.