The invention provides a non thermo-sensitive type lyotropic liquid crystal soluble oil system. The system comprises, by weight, 55-85 parts of 20 wt%-50wt% of inorganic salt water solution, 5-10 parts of nonionic surfactant, 5-10 parts of ionic surfactant. The system does not contain cosurfactant. The non thermo-sensitive type lyotropic liquid crystal soluble oil system meets the various industrial requirements of environmental protection, and is easy to transport. The system is prepared from ordinary surfactant, the preparing method is simple, the manufacturing cost is low and the implementation is easy.