Administration by law is the key to administer a country by law, which is the important tache and way to actualize the administrative management.

• 依法行政是依法治国的关键，是实现国家行政管理法治化的重要环节和途径。 依法行政要求行政机关做到：法无授权不得行，法有授权必须行，行政行为程序化，违法行政必受追究。