In 1995,Soil locusts occurred severely in Chifeng(赤峰)，Inner Mongolia.Ave.50- 60/M2;the highest pop.of 260/M2;causes loss of 4.1 billion Kg.of fresh pastures. In 2001,locusts occurred severely in 11 provinces in northern China.100-1000 locusts per M2 were found in Baiyangdian (白洋淀)，Hebei..In 1995, Soil locusts occurred severely in Chifeng (赤峰）, Inner Mongolia. Ave. 50- 60/M 2; the highest pop. of 260/M 2; causes loss of 4.1 billion Kg. of fresh pastures. In 2001, locusts occurred severely in 11 provinces in northern China. 100-1000 locusts per M 2 were found in Baiyangdian (白洋淀), Hebei