A new project,High Intensity heavy ion Accelerator Facility(HIAF)is under design now in China,which will provide stable and unstable ion beams with high energy,high intensity and high quality[1].Dielectronic recombination(DR)experiments of very heavy highly charged ions and radioactive ions are considered as the main motivation for atomic physics at HIAF[2].The spectroscopy of very heavy H-and Li-like ions is a powerful tool to test quantum electrodynamics(QED)in strong fields and to investigate the generalized Breit interaction(GBI)[3,4].In addition,the isotope shift and the hyperfine splitting can be researched with DR experiments of Li-like ions.