Based on the rapid growth of the environmental emissions caused by civil aviation activities combined with the background and history of the policies related to engine emissions, this paper looks forward to the development trend of the engine emissions policy. The research shows that the requirements of NOx in ICAO and FAA are becoming more stringent due to the greater harm and difficult control of NOx, while the emission requirements for HC, CO and smoke have remained basically unchanged. At the same time, the development of lowpollution combustion technology was introduced, the generation mechanism of exhaust pollutants, main influencing factors and improvement measures were analyzed, and the emission control methods of oilrich and oilpoor combustion were expounded based on the pollutant generation and control principles. Finally, the verification method of aircraft emission airworthiness was introduced. The measurement procedure and calculation analysis method of gaseous emission pollutant and fume emission in LTO cycle based on engine bench test were proposed. The measurement program and calculation analysis method can accurately evaluate the level of exhaust pollutants of aeroengines during operation and can be applied to the emission assessment and prediction of aeroengines and large gas turbines.