The good parts of observation is articulations manus and genus for the bone age evaluation in teenagers with Xray plates and the methods of bone age estimat io n were the subjective and errors at random. The objective and accurate methods o f bone age estimation will be constructed with the application of computerized medical imaging and graphics and intellectual technique. The bone age estimation used the sternum, clavicle and pubic bone in adult and the methods need deeply research for better bone age estimated result. This article the prese nt situation and research progress of bone age estimation with Xray plate were summarized.