The invention relates to a method for quantitative analysis of p-coumaric acid. The method utilizes a H2SO4-KIO3-[NiL](ClO4)2-MA(malonic acid)-H2O2 non-linear chemical oscillation system as a detection solution, builds a working curve according to p-coumaric acid oscillatory response in detection and realizes quantitative analysis of p-coumaric acid. In the [NiL](ClO4)2, L represents 5, 7, 7, 12, 14, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradecyl-4, 11-diene. The quantitative analysis method of the p-coumaric acid has the characteristics of high accuracy, operation easiness, convenience and fastness.