The invention belongs to a car license plate number adopting a difficultly confused letter and number mixed structure, and relates to the technical field of car license plate numbering. The purpose ofthe invention is to provide a car license plate number which is generated by adopting letters and numbers simultaneously and does not cause confusion and difficult distinguishing. In order to achievethe purpose, license plate number forming elements include capital letters and numbers; the car license plate number is characterized in that the capital letters include eleven letters A, C, E, F, H,M, R, U, W, X and Y; the numbers include ten numbers 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9; and the length of the license plate number is six forming elements and can comprise one of the following situations: a situation I: the six forming elements are all composed of the capital letters; and a situation II: the six forming elements are all composed of the numbers. The car license plate number has thebeneficial effect of difficult confusion.