Biological characters and life table parameters of Amblyseius gossipi Elbadry were determined at three different kind of food. Duration of immature stages of A. gossipi were nearly similar when fed on different diets. Development % was significantly affected by the kind food where it was highly 90% when predatory mite fed on the animal prey, Tetranychus urticae Koch followed by its feeding on date palm pollens, 76% and Maize pollen, 72%.Longevity and fecundity of A.gossipi when feed on different food Date palm pollens and Maize pollens were successful alternative diet compared with live prey, T. urticae.Net reproductive rate (R o ) differed according to different food, these values averaged 21.54, 15.33 and 6.32 times for T. urticae, Date palm pollens and Maize pollens. The intrinsic rate of increase (r m ) was .31, 0.14 and 0.10 individual/♀/dayfor the above same order. The mean generation time (T) was decreased on Maize pollen.The daily rate of T. urticae consumption increased with increasing prey density to a maximum average of about 5.31 / individual/day at prey density of 15 / leaf disc compared with10 and 5 / leaf disc. The effect of temperatures on life cycle, developmental rate and survival immature % of A. gossipi fed on T. urticae was significant. Longevity was the longest at 25ºC compared with 20 and 30ºC where these values were 28.72 and 36.80 days for male and female, respectively. Female of A. gossipi laid 48.18 eggs at 30ºC, 35.88 eggs at 25ºC and 24.60 eggs at 20ºC. Temperature had significant differences with prey consumed where, A. gossipi consumed high number of prey when fed on T. urticae at 30ºC for male and female. The mean generation time (T) was decreased when the temperature increased, the net reproductive rate (R o ) value were 8.21, 16.36 and 23.15 times for 20, 25 and 30ºC respectively. The intrinsic rate of increase (r m ) were 0.11, 0.13 and 0.23 individual/♀/day for the above same order.