γ’ phase evolution in the Ni-based single crystal alloy containing Re during heat treatment process and creep process was described by observing the morphology change of the alloy at heat treatment and aging at different temperature combining with the FEM analysis.The results show that γ’ phase like butterfly is precipitated from the matrix during solid solution process.And it grows in form of cubic structure during the first ageing process.With secondary ageing treatment

γ’ phase is slightly grown with the more regular arrangement.In addition

γ’ phase becomes coarse with the increase of cubic degree when it is first aged at different temperature.The rational heat treatment parameters were presented.