Effects of condguration mixing and relativistic corrections on the dielectronic satellite spectra have been studied for the He-like ions with low-and medium-Z. The atomic Parameters characterizing the dielectronic satellite lines are evaluated by using the send-and non-relativistic Hartree-Fock models. The results calculated show that (1) configuration mixing has an important effect on the dielectronic satellite spectra for the He-like ions, and (2) for the medium-Z He like ions, it is no longer sufficient that the effects of relativity are considered in the form of perturbation energy corrections, and in order to obtain more accurutc numerical results, relativistic corrections should be made both for energy and for radial wavefunction.