Decision-making accountability is a subsequent controlling measure which is designed to hold the one accountable based on relevant laws and regulations for heavy losses and adverse effects caused by his wrong decision-making. Its emphasis and difficulties lies in its applicable scope, degree measurement and identify of decision-making mistakes. There are three situations of decision-making mistakes not applicable to the accountability caused by cognition limitation, instruments’ stage or information finiteness.Decision making accountability is urgently required to deal with the starting of public administration, preparing of research achievements and painful lessons of decision-making mistakes. Its premise is to set up the consciousness of responsibility; the core is the perfect accountability procedure and the sound regulations and laws are safeguard.