Tungsten and tungsten-based alloys are important materials in lighting,electronics,military and fusion reactors due to their good thermal conductivity,high melting point,low erosion rate and low tritium retention under the extreme service environment(high thermal load,high flux H/He plasma and neutron irradiation).It is regarded as one of the promising candidates for plasma facing materials(PFMs)in fusion Reactors and had been widely studied in recent years.However,it needs to further develop high-thermal-shock resistant tungsten alloy to meet the actual requirements as PFMs in future fusion reactors.