Abstract: The key technology of filter for high temperature gas dust removal is the high temperature filter material.Porous ceramics, porous metal materials and new filter materials, their characteristics, and the latest research progress are respectively presented in this paper.The new porous materials such as metal-ceramic composite membrane can overcome the shortcoming of bad welding tightness and bad thermal shock resistance of porous ceramics and the difficulties of preparation and poor stability of metal porous materials, have become the focus of attention of high-temperature gas dust removal materials researchers.