The invention relates to the field of new energy automobiles, and discloses a high-efficiency solar panel for a new energy automobile, electric control cylinders are started, two electric control cylinders enable two cylinder telescopic rods to perform telescopic movement, two arc-shaped connecting rods are driven to move, the two arc-shaped connecting rods drive a driving frame to move, and through arrangement of a driving connecting block and a driven connecting block, the driving frame is driven to move; the driving frame and the driven frame can be spread out under the action that the guide wheels slide in the guide sliding grooves, so that the solar energy absorbing efficiency of the solar energy collecting plate is improved, the function that the driving frame and the driven frame can be folded is achieved, and through the arrangement that the driving frame and the driven frame are easy to fold, articles such as a trunk can be placed on the automobile roof; according to the car roof fixing device, the connecting bolts can be limited and prevented from loosening through the arrangement of the nuts, articles of a trunk can be fixed through the arrangement of the T-shaped sliding grooves, the T-shaped sliding blocks, the connecting bolts, the connecting rings and the elastic binding bands, and therefore the utilization rate of the car roof is increased.