Abstract: According to the principles for certifying air traffic control (ATC)system and management cycle of ATC projects,a life-cycle management model of ATC system of Civil Aviation in China is developed.Criteria of approval certi-fication in United States and Europe are summarized in this paper and the framework behind them is presented.Take this finding as a reference,a criterion and its framework of safety assessment based on GBAS landing system (GLS)of Civil Aviation Administration of China is developed.The certification process for this new framework is presented and it in-cludes three major phrases:design review of a system,test for equipment performance,and field test for operation.From the perspective of operational safety,hierarchy and content,the approval process for the certification is analyzed and the quality of GLS is standardized.This proposed method can ensure a comprehensive and systematical approval process for the certification of GLS from design,and operation,which will eventually ensure the certified system meeting the require-ment of safety performance in the field according to the criteria of certification process of GLS in China.