▎ 摘　　要

NOVELTY - Preparing photo-catalytic olefin compound and carbon dioxide by anti-horse hydrogen carboxylation reaction, comprises (i) adding photocatalyst and electronic sacrificial body into solvent to obtain solution A, (ii) adding olefinic compound into solution A to obtain solution B, and (iii) irradiating solution B with light source under the atmosphere of carbon dioxide, then olefin compound and carbon dioxide undergoes anti-horse hydrogen carboxylation reaction. USE - The method is useful in the technical field of olefin hydrogen carboxylation. ADVANTAGE - The method has a simple process, mild reaction conditions, does not require high temperature and high pressure, and photocatalyst can be recycled.