Reconstruction of experimental axisymmetric equilibria is an important part of toka-mak data analysis.Fourier expansion is applied to reconstruct the vessel current distribution inEFIT code.Benchmarking and testing calculations are performed to evaluate and validate thisalgorithm.Two cases for circular and non-circular plasma discharges are presented.Fourier ex-pansion used to fit the eddy current is a robust method and the real time EFIT can be introducedto the plasma control system in the coming campaign. Reconstruction of experimental axisymmetric equilibria is an important part of toka-mak data analysis. Flow expansion is applied to reconstruct the vessel current distribution in EFIT code. Benchmarking and testing calculations are performed to evaluate and validate this algorithm. Two cases for circular and non-circular plasma discharges are presented.Fourier ex-pansion used to fit the eddy current is a robust method and the real time EFIT can be introduced to the plasma control system in the coming campaign.