In order to test the soil phthalate,this paper adopts ultrasonic extraction liquid chromatography detection of 6 phthalate in soil,using the phthalate ultraviolet maximum absorption wavelength to determine,adjust the high performance liquid chromatography to form 6 kinds of phthalate detection method,using the detection of soil phthalate content detection analysis,to take scientific positive method to solve the problem of sudden pollution.