IMA1G has been widely applied in military and civil avionic systems, and the era of IMA2G will come soon. IMA2G has overwhelming superiority over IMA1G in such aspects as function, power consumption, volume, weight and cost. The academia and industry at home and abroad attach great importance to IMA2G. Considerable progress has been made in relative research areas, but there are still many challenging issues. This paper gives a detailed illustration of the progress of IMA2G in key technology fields in foreign countries, and then introduces our research scheme, achievement, test and validation on the IMA2G. Finally, further research directions are given.