<p>Electronic textiles have emerged as a critical platform for flexible electronics due to their excellent wearability. However, achieving multifunctionality typically involves layering various functional components, which compromises comfort and interface stability. Here, we present a radiative cooling triboelectric textile (RCTT) that simultaneously addresses self-powered sensing and personal thermal management through photonic-engineered structural design. The textile is fabricated via electrospinning of styrene–butene–styrene (SEBS)/polyethylene-polypropylene glycol (F127) composite, followed by TiO₂ nanoparticle coupling, fluorosilanization, and liquid metal alloying. The resulting RCTT demonstrates a power density of 328 mW·m⁻² with sustained performance over 5100 cycles, enabling self-powered operation as both an energy harvester and motion sensor for human body monitoring. Through engineered photonic design, the textile exhibits a solar reflectance of 92% and an infrared emissivity of 96%. This enables sub-ambient temperature reductions of 2.0&#xa0;°C and 1.1&#xa0;°C under sunny and cloudy conditions, respectively, with a corresponding daytime cooling power of 78.5 W·m⁻². Furthermore, the material retains ultra-stretchability, super-hydrophobicity, and excellent air/moisture permeability alongside robust mechanical stability. This integrated approach represents a significant advancement in multifunctional wearable electronics, offering a viable strategy for developing self-powered textiles with enhanced thermal comfort for outdoor applications.</p> Graphical Abstract <p></p>