Low-temperature electrolyte for Ferrous lithium phosphate lithium ion battery. The electrolyte includes ethylene carbonate, propylene carbonate, dimethyl carbonate, ethyl butyrate, fluoroethylene carbonate, lithium oxalate borate and lithium hexafluorophosphate. The application of this electrolyte can significantly improve the low-temperature electrical properties of Ferrous lithium phosphate lithium-ion battery and make the battery have better cycle performance.