The invention relates to a non-aqueous electrolyte, comprising a lithium salt, an organic solvent and additives, wherein the additives comprise an additive A. The additive A is one or more selected from the group consisting of substances as shown in a general structural formula which is described in the specification. In the above formula, R1 is one selected from the group consisting of alkyl groups, and substituted or unsubstituted phenyl groups, wherein the substitution is partial substitution or complete substitution, and a substituent is one or more selected from the group consisting of analkyl group, a carboxyl group, a cyano group, an alkylthio group, and an amino group; and R2 and R3 are independently selected from the group consisting of hydrogen, an ester group, a carboxyl group,a cyano group, an alkylthio group, an amino group, and a nitro group, and at least one of R2 and R3 is not hydrogen. According to research results of the invention, the additive A having a structurerepresented by the general structural formula can improve the high-temperature storage performance, low-temperature discharge performance and safety performance of a battery.