The occurrence and injury of Batocera horsfieldi are related to the forest types,place in forest, distance to the pest base and poplar breeds. With the distance,directions and characteristic ofspread adults in the forest belt being measured and tested directions of spread adult are related to thenumber of vegetation,mainly to the number of host of supplementary nutrition. The adults havestronger flying ability.In this paper are also measured and tested the time,distance,hight.speed anddirections of the adults with a once-continuous flying.