Based on three-parameter rotating body model，the relative surface energy，relative coulomb energy and relative rotating energy of deformed nucleus are calculated. These relative energies are all independent of any certain nucleus they might belong to and have generality. They can be used in the calculation of dynamical simulation. According to these results，the deformation potential energies of some nuc1ei are calculated，the calculated fission barrier heights of some nuclei are in agreement with the experimental results. The deformation potential surface of ²³⁶U is drawn and analysed in detail. In addition，the inertial mass and frictional tensors are calculated by means of Werner Wheeler method. Finally，the scission point equation of the deformed nucleus is discussed.