Aircraft carbon emissions because of their special status led to the spatial vertical distribution of pollution significantly different from other stationary sources and ground transportation. This paper will research on the Great Circle Distance (GCD) between the origin and destination airports, in order to get the fuel used from the CORINAIR database, and thus base on the Fuel Consumption Method (FCM) to estimate the CO2 emissions for a single fight or certain fleet. A carbon emissions evaluation system was developed, which based on the CORINAIR database, airport location database, and flight schedule database. After enter the origin and destination airports, the calculation for a single flight has been analysis, and from the statistic data of civil aviation in China, as the end of 2010, 175 transportation airports, 1880 scheduled routes of China's civil aviation industry had been included in the database of system, to achieve the regional carbon emissions evaluation. However, at present, the real-time monitoring the aircraft emissions in flight conditions is not possible, so, this paper will also give some advice on how to resolve this problem for further researcher.