▎ 摘　　要

NOVELTY - Preparing recoverable polymer-based solar light-thermal material comprises (i) preparing porous sodium chloride template, (ii) preparing a polymer precursor mixed solution or pre-polymerization solution containing exchangeable dynamic bond and light-heat conversion agent, (iii) pouring the polymer precursor mixed solution or pre-polymerization liquid in the porous sodium chloride template,(iv) heating the system, completing the cross-linking polymerization reaction, and (v) placing the system for finishing the cross-linking polymerization in water to remove sodium chloride salt template to obtain product. USE - The solar light-thermal material useful for interface water evaporator (claimed). ADVANTAGE - The solar light-thermal material has wide material source, flexible design, low cost and no pollution, good recycling performance, energy-saving and environment-friendly, and good application prospect in the solar light-thermal interface water evaporator. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for polymer-based solar light-thermal material, obtained by the above- mentioned method.