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The distribution and infection dynamics of Heteroderaavenae and H.filipjevi were studied in the fields in Henan province.The hatching characteristics of H.avenae and H.filipjevi at different temperatures were studied.The preliminary results were as follows.(1) The test field in Xuchang(H.filipjevi) had 60 plots, the field in Xingyang(H.avenae) had 48 plots, and each plot was 49m2.The horizontal samples analysis result indicated that every plot had cereal cyst nematodes, but the densities of cyst were different in different plot.The highest cyst density was 36 per 100g soil, the lowest was 4.3 per 100g soil in Xuchang field.