The invention discloses an aerodynamic characteristic data processing method based on a data mining technology, and belongs to the field of aerodynamic design of aircraft. Sample point data of the aircraft is selected and classified according to state parameter variables and aerodynamic characteristic parameter variations, the state parameter variables are set to be independent variables, and the aerodynamic characteristic parameter variations are dependent variables. The independent variable with unignorable influence is selected as a modeling independent variable according to influences of the independent variables on the dependent variables, an aerodynamic force data model is built according to sample point data, an average relative error of the built model is verified according to the sample point data and iterations are corrected until the aerodynamic force data model meets an accuracy requirement. According to the method provided by the invention, the data mining technology is introduced to perform analysis on an aerodynamic characteristic change rule, and the aerodynamic model is built on the basis of grasping the rule, so that aerodynamic characteristic analysis efficiency and utilization accuracy are effectively improved.