Wireless sensor network technologies were used as a carrier of information acquisition and transmission, and a cooperative monitoring system for Bactrocera dorsalis (Hendel) and related environmental factors was designed and developed, and related monitoring experiments were taken almost six months from citrus' fruiting to mature periods in Guangzhou. Monitoring results showed that B. dorsalis occurrence numbers increasingly risen and reached maximum from the early part of August to the early part of October when the temperature were 22.5 ℃ to 36.5 ℃ during the fruiting period with B. dorsalisranging from 516 to 893 heads in per week; B. dorsalis occurrence numbers were shakily decreased from the middle of October to the latter part of November which was the citrus' mature period when the temperature gradually dropped from 30.1 ℃ to 16.4 ℃ with dry air, and B.dorsalis ranged from 108 to 293 heads in per week during this period; B. dorsalis occurrence numbers were sharply declined from the early part of December to the middle of January next year due to lack of fruit which provides nutrient maintenance, and B. dorsalis ranged from 0 to 18 heads in per week in this period. Statistics and payload analysis of principal component with environmental factors indicated that there were closely interaction among all factors, and temperature, light and the rainfall had significant effects on B. dorsalis occurrence, among which temperature and light showed the biggest effect with main factors being temperature and soil temperature with payload 0.960 and 0.961 respectively and the effect of the rainfall, whose main factors were rainfall and soil water content with corresponding payload 0.712 and 0.809 respectively, took the second place.