The invention discloses surfactant-containing electrolytic solution of a lithium-ion secondary battery, which contains an organic solvent, a lithium salt electrolyte and a surfactant of a fluorine compound. The surfactant is ethoxylated nonionic fluorine carbon surfactant and has a chemical structural formula of RfCH2CH2O(CH2CH2O)mRc, wherein the Rf is a fluorine carbon chain hydrocarbon represented by F(CF2CF2)n; the value of m ranges from 0 to 100; the value of n in the fluorine carbon chain hydrocarbon ranges from 0 to 50; and the Rc may be one of H, Li, Na, K, Ru and the like, may be an alkyl such as methyl, ethyl and phenyl or an aromatic base, also may be Rf like fluorine carbon chain hydrocarbon structure. The surfactant can reduce the surface tension of electrolytic solution of a liquid lithium-ion secondary battery, optimizes the anode and cathode material and diaphragm wetting performance of the electrolytic solution, optimizes the electrochemical performance of the whole battery, improve capacity effectiveness of the whole battery by about 1 to 3 percent, allows the whole battery to circulate for 500 times at a power factor of 1C and improves the capacity retaining rateto 90 percent from the 80 percent in the prior art.