Abstract: A laboratory experiment was conducted to investigate the growth and reproduction of Diachasmimorpha longicaudata (Hymenoptera: Braconidae) reared on the 3rd instar larvae of Bactrocera dorsalis (Diptera: Tephritidae) at 15, 18, 21, 24, 27, and 30  ℃. Within the range of test temperatures, the generational development time shortened with increasing temperature, from about 45.7 days at 15 ℃ to 15.2 days at 30 ℃. Excessively low or high temperature had definite inhibition effect on the development of D. longicaudata. At 15 ℃ and 30 ℃,  the survival rate of D. longicaudata at immature stages (i.e., from egg to adult) was 10.2% and 31.3%, respectively; while at 24-27 ℃,  the survival rate was above 50%. The longevity of D. longicaudata decreased with increasing temperature, and that of the females was usually longer than that of the males. The fecundity of D. longicaudata was the highest (74.2 progenies) at 24 ℃, followed by at 27 ℃ (53.4 progenies), at 21 ℃ (35.7 progenies), and at 18 ℃ (31.6 progenies). At 15 ℃ and 30 ℃, no more than 20 progenies were observed. At 15-24 ℃, the female/male ratio increased with increasing temperature, being the highest (0.59) at 24 ℃; at 21-27 ℃, females predominated in the progenies populations. The intrinsic increase rate (r_m) was the highest (0.1318) at 27 ℃, followed by at 24 ℃ (0.1239), at 21 ℃ (0.0747), at 30 ℃ (0.0318), and at 18 ℃ (0.0187). At 15 ℃, the intrinsic increase rate and population trend index were -0.0240 and 0.8, respectively, indicating that the population at this temperature presented a negative increasing trend. The favorite temperature range for the development and reproduction of D. longicaudata was from 24 ℃ to 27 ℃.