for l**ted company,the most important financial index are earnings per share,net asset per share and net assets yield. these three criterias are used for judging the benefits of l**ted companies,and are always be great concerned by security market participants.security **rmation institutions publ**h the ranking l**t regularly according to the order of three indexes of l**ted companies,which shows its importance.however,the author suggested to do some adjusts when using the three indexes,especially when choosing investment objectives,to find a l**ted company with real investment value.