The invention discloses a 2D acceleration 3D image transverse storage method based on RGB compression. The method comprises the steps of transversely dividing a picture with resolution of A*B into three equal parts; transversely compressing a 2D color picture to 2/3 of original size, and then placing the compressed picture into a 2/3 A*B area; transversely compressing a depth map into 2/3 of original size and placing the compressed depth map into the rest 1/3 A*B area through an RGB channel; and converting a 2D acceleration image to a multi-view picture through a conversion circuit or software. On condition that the size of a finally displayed picture is unchanged, information amount of an original 2D color picture part is added by 50% to that of an original mode. Because of multiplexing of the RGB channel and simultaneously adding the information amount of the original depth map by 50% to that of the original mode, 3D display image quality can be greatly improved without other expenditure.