With the prerequsite of governace innovation the author studied law innovation of local goverment power from three as- pects according to the power relation between central government and local goverment under the present Chinese Consitution. The first aspect is the achievements, content and significance of study of power of local government ruled by law at home and broad. The second aspect is the experenee drawn from separation of powers between central and local government in federal and unitary state. The last is the macro-requirement and micro-fou...