This paper explores the application prospects of zirconium—hafnium materials in the military field. Zirconium and hafnium exhibit significant potential in aerospace, nuclear industries, and armor protection materials due to their high melting points, excellent corrosion resistance, and thermal conductivity. In particular, zirconium diboride (ZrB2) and hafnium diboride (HfB2) materials are widely utilized in the thermal protection systems of hypersonic vehicles and re- entry spacecraft due to their stability in extreme high- temperature environments. Zirconium alloys are ideal structural materials in nuclear reactors because of their low neutron absorption cross- section and corrosion resistance. This paper also discusses the challenges in the manufacturing processes of these materials and future development directions, highlighting their potential and significance in emerging military technologies.