Abstract: 19 kinds of wild plants with the effect of clear heat and detoxification have been selected from Daqing district in the research, and the inhibiting effects of plant extractive on 5 kinds of plant pathogenic fungi have been tested, including Fusarium graminearum and so on. Growth rate method was used to determine antifungal activity of ethanol extraction of 19 kinds of wild plants on five kinds of fungi. The results showed that ethanol extraction of 6 kinds plants had more than 65% inhibiting rate on at least one of participation pathogenic fungi. The ethanol extraction of Solanum nigrum plant had inhibiting effects on all 5 kinds of fungi, the inhibition rate on Fusarium graminearum was 78.31%, and on Bipolaris carbonum Wilson was 84.87%. The ethanol extraction of Linum stelleroides Planch roots had inhibiting effects on 3 kinds of pathogenic fungi, the inhibition rate on Bipolaris carbonum Wilson was 73.94%, and on Rhizoctonia solani Kuhn was 72.7%. The ethanol extraction of Solanum nigrum and Linum stelleroides Planch had inhibitory activity on most of tested plant pathogenic fungi. The ethanol extraction of Cannabis sativa L., Hemp, Xanthium sibiricum Patr and Helianthus tuberosus had inhibitory activity on all tested plant pathogenic fungi.