The invention relates to a supercritical carbon dioxide cracking technology. A supercritical carbon dioxide cracking liquid system is prepared from the following raw materials of supercritical carbon dioxide, arachidic acid, behenic acid, lignoceric acid, heptadecanoic acid, oleic acid, glycerin, cyclopentane, cyclohexane, dichloromethane, trichloromethane, 1,2-dibromobutane, 1-bromobutane and 2-chloropropane. The supercritical carbon dioxide cracking liquid system has the advantages that the preparation technology is simple, the number of operation procedures is fewer, the cracking cost is low, the effect is good, the sand carrying property is good, the water phase is small, the cracking with small water amount is realized, the damage of water phase to reservoir layer is effectively reduced, and the clay expansion is inhibited to a great degree; the construction time is effectively shortened, and the working intensity is decreased; compared with the traditional cracking type, the liquid residue is greatly reduced, and the environment-friendly and green construction purpose is realized at high efficiency.