Empirical research results indicate that Chinas banks total efficiency shows U shape character from fall to rise. The efficiency of joint-stock commercial banks is a little better than state-owned commercial banks. After stock reform in 2003, state-owned commercial banks efficiency rises as a whole. Inside management technical level (PTE) of joint-stock commercial banks and state-owned commercial banks is better than their scale situation (SE). Scale inefficiency is the main cause leading to total technical inefficiency.