Abstract: The present invention relates to an electrolyte additive, a non-aqueous electrolyte and a lithium ion battery using same. The electrolyte additive includes a compound represented by Formula 1: In Formula 1, R1, R2, R3, and R4 are each independently hydrogen atom, halogen atom, a substituted or unsubstituted chain C1-C12 alkyl group, a substituted or unsubstituted chain C2-C12 alkenyl group, a substituted or unsubstituted chain C2-C12 alkynyl group, or groups represented by RCnH2n+1. R is each independently oxygen atom or sulfur atom, and n is positive integer. The electrolyte additive has a special structure. During the first charge and discharge process, redox products formed by oxidation-reduction reaction of multiple conjugated olefin structures adhere to the positive and negative electrode surfaces to form solid electrolyte interface films. The films have low impedance and high lithium ion conductivity, so the lithium ion battery has excellent rate performance and low temperature performance.