Abstract:During the conference of forest pests protection held in China in 1990,it was urged by the State Forestry Department that computer network of prediction in forest pests should be established immediately and become the one part of prediction system of forest pests. Application of communication through computer network for prediction of forest pests was successful. It was carried on by Forest Protection Station in Fujian, Nanjing Forestry University, Nanping Forest Pretection Stationn in Fujian and Sanming Forest Protection Station in Fujian in 1994.The Fortune Fax communication system based on Great Wall Computers and distant telephone lines was used,according to HDLC communication rules. The distant computer network communication between cities (or regions) was realized at last,so that code information,numbers and prediction results of for est pest prediction could be sent out in fast speed immediately.It makes a breakthrough in the transndssion of prediction in formation of forest pests in our country, timeconsuming turns the conventional timeconsuming letter communication to fast computer transmission,which improves obviously the timeliness and precision of forest pests prediction and provides applied technique for computer network communication for forest pest prediction.