The energy structure of 1s2np and 1s2nd states and the oscillator strengths of 1s2np-1s2nd for Zn27+ ion are calculated in this paper.The nonrelativistic energies are calculated by using FCPC method.The mass polarization and relativistic effects,which contain the correction to kinetic energy,Darwin term,electron-electron contact term and orbit-orbit interaction,are included from first-order perturbation theory.To get highly accurate results,the higher-order relativistic and QED contributions to the energy are considered by introducing effective nucleus charges.