During power industry marketization, the governmental law, regulation, institution and all sorts of direct rules are not only prerequisite to power marketizaton but also guarantee for efficient power marketization promotion. Playing an important role in the constitution of power rule system, rule establishment of regional power market serves as the prerequisite to regional power market establishment and its effective operation. Respective orientation of central and regional power supervision institutions decides different core and manner. For instance, central power market raises and makes certain integrated rule, policy, law and regulation while regional power market focus on maintenance and protection of healthy and ordered development of regional power market even as to regional power industry. In regard to concrete execution, the core and focus point lie in regulations, mainly include legal excess to regional power market, competitive efficiency, transaction supervision and equity and operational safety.