Abstract:The plants are divided into different polar parts by means of extraction， and to study the antioxidant activity of different polar parts from the Vemonia solanifolia Benth with the method of DPPH. The experimental study shows that different polar parts have certain antioxidant ability， and under the condition of the same con－ centration， chloroform extract and ethyl acetate layer extract， n-butanol extract，total extract， petroleum ether extract showed the antioxidant capacity decreased in turn， and chloroform and ethyl acetate extract antioxidant capacity is outstanding， it has the development value.