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The reason of the superconductivity in iron-based superconductors is as same as in cooper oxide,by the ground state of magnetic orderly evolved.So magnetic plays an important role in the high temperarure superconductors.Specific heat,resistivity, magnetic susceptibility measurements were performed on high quality single crystalline NaFe1-xCoxAs.Especially we measured the specific heat in under the action of different magnetic field.We have systematically analysis the result of the specific heat measurements.We found that the Superconducting Tc decrease in under the action of different magnetic field in the NaFe1-xCoxAs.And there is a drop in electronic heat of the NaFe1-xCoxAs.We mapped out the phase diagram of NaFe1-xCoxAs through resistivity and magnetic measurements.