The principle and process features of pressure swing adsorption oxygen producing technology are introduced in this paper. The development status of adsorbent for the pressure swing adsorption oxygen producing is reviewed. The introduction of LiX molecular sieve is focused. The principle of selecting oxygen adsorbent is further pointed out. The research direction of adsorbent for the pressure swing adsorption oxygen generating is put forward. In the end,the development prospects of pressure swing adsorption oxygen producing are proposed.