The invention discloses liquid fuel. The component of the liquid fuel comprises dialkyl carbonate with the molecular formula of CnH2n+1-[OCOO]-CmH2m+1, wherein the n is not smaller than 1 and is not greater than 8, and the m is not smaller than 2 and is not greater than 8. The liquid fuel disclosed by the invention has the characteristics of no toxin and biological degradation, has the advantages of traditional fossil-based and biological liquid fuel simultaneously, is better than fossil-based liquid fuel in the aspects of the lubricating property, the discharging property, the noise reducing property, the volatility, the safety, the environment-friendly property and the like and is better than biological liquid fuel in the aspects of the low-temperature property, the compatibility of a sealing material, the heat and oxidation stability, the corrosiveness, the price and the like. The liquid fuel disclosed by the invention has high comprehensive performance-price ratio, exceeds traditional liquid fuel in an omnibearing way in functions and can be widely used for the fuel of a motor vehicle, the fuel of weaponry and equipment, fuel for cooking, central heating and the like, fuel for power generation, fuel for an extremely harsh requirement to a working condition, fuel for a high requirement to environmental protection and fuel for a high requirement to the healthy safety.