The quantitative dynamics of male B. tau were monitored in different habitats. Then the key climatic factors affecting the quantitative fluctuation of B. tau were analyzed. The results showed that habitats and climatic factors significantly influenced the quantitative dynamics of male B. tau. The number of B. tau in the mixed vegetable plot, landscape area and mixed fruit orchard were more than those in the residential area, farmers market and field planted bitter gourd. The stepwise regression analysis and path analysis indicated that the quantitative fluctuation of male B. tau was controlled by mean monthly temperature, monthly atmospheric pressure, monthly relative humidity, monthly minimum relative humidity and monthly sunlight hours, hereinto, mean monthly temperature was the most important factors. Based on these results, the control of B. tau was not limited in its hostplant habitats. Bactrocera tau should be managed in other habitats arrcording to its monitoring data.