Efficient thermal management of high-temperature surfaces is increasingly important for industrial equipment

transportation systems

outdoor energy facilities

and high-power electronics

where persistent heat accumulation directly affects energy efficiency

operational reliability

and service lifetime. Although active cooling technologies remain dominant in practice

their high energy consumption and system complexity limit sustainable deployment. Meanwhile

conventional radiative cooling materials are mostly optimized to achieve passive sub-ambient cooling by reducing solar heat gain and enhancing infrared emission; however

their commonly used porous

polymeric

or optically scattering structures often possess low thermal conductivity

limited heat-transport pathways

and insufficient thermal stability

which can restrict heat extraction from continuously heated substrates and lead to insufficient cooling power and inadequate adaptability under fluctuating thermal environments. These limitations make it necessary to reexamine radiative cooling from the perspective of surface heat dissipation under sustained thermal load. In this review

recent advances in radiative cooling materials for high-temperature surfaces are introduced by focusing on three major challenges: reducing the energy penalty of cooling

enhancing heat-dissipation capacity for high-load surfaces

and coping with fluctuating thermal conditions. Correspondingly

broadband-emissive radiative cooling materials for passive cooling with reduced energy consumption

hybrid radiative cooling materials that couple radiation with additional heat-transfer pathways to deliver stronger cooling

and dynamically responsive materials for adaptive thermal regulation are summarized. Finally

the remaining challenges and future opportunities for practical deployment are discussed.