The dynamic evolvement of the magnetic field in the solar photosphere plays key role in the eruptions which occurred in solar corona. Current helicity, induction electric field and Poynting flux of the solar magnetic field have been considered as appropriate representations of the magnetic non-potenciality. The contribution of them to the transverse and relax of the non-potential energies have been analyzed. As an example, the magnetic field of active region NOAA10488has been studied here. The distributions of current helicity, induction electric field and Poynting flux have been calculated, then their relationship with the flare have been discussed. It is found that the distribution of both the current helicity and the Poynting flux correlate closely to the flare, while the correlation of the induction electric field needs further investigation.