In view of the lack of systematic theoretical research on the multi-field problem of electromagnetic eddy current induction in realizing the rapid internal heating of carbon fiber reinforced composites plastic (CFRP),the electro-magnetic-thermal multi-field co-simulation and analysis of aviation CFRP were carried out.Firstly,based on the physical properties of CFRP,the physical principle of eddy current heat was analyzed.Secondly,by designing CFRP with different lay numbers,the effects of coil input power/voltage and the number of composite layers on the eddy current thermal effect were analyzed according to the law of electromagnetic eddy heat generation.Thirdly,the distribution of electromagnetic eddy current field and temperature in the process of induction heating was simulated and analyzed by electro-magnetic-thermal finite element model(FEM).Finally,the results of FEM are verified by experiments.The results show that the CFRP board can produce a closed-loop induced current in the eddy current effect,and the induced current is low in the middle and high around of the CFRP board.Under the fixed input voltage of 25 V,the heating effect of single-layer CFRP board is the most significant,and the stable temperature is about [BF]141.4[BFQ] ℃.With the increase of input power/voltage,the eddy current thermal effect of double-layer CFRP increases,and the thermal stabilizing time is increased synchronously.The distribution law of electromagnetic eddy current field and temperature in the process of induction heating is studied through the electro-magnetic thermal FEM and experiment,which is of practical significance to promote the engineering application of electromagnetic eddy current thermal effect in aviation CFRP welding and other fields.