Abstract: Legalization of macro-control,the key to the rule of law,is designed to regulate,ensure and control the power of macro-control. Legalization of macro-control is of great values in improving the performance of macro-control,reducing the risk of macro-control,and preventing it from becoming a profit-making tool of the interest group,etc. But,there are at least three challenges,such as concept challenge,system challenge and technology challenge,in implementing the legalization of macro-control.These challenges constitute our environment of macro-control law. So,we should take methods which are combined with hardness and softness,according to discretion which is the characteristic of macro-control,based on the environment,to achieve the legalization of macro-control gradually.