The predatory mite Proctolaelaps gizaensis was found under palm trees and core of palm associated with mites, Rhizoglyphus robini, collembolan and other arthropods. The incubation period is affecting by different diets at 27±2ºC and 65-70%, the shortest period was 1.61 days when reared on sugar cane + pollen +chitosan), and the duration of larval female increased than male. Statistical analysis showed significant effects on the duration of the total immature stages with different diets. At the same temperature, life cycle durated 11.32 days for female and 10.10 days for male reared on sugar cane, but when add pollen to sugar cane, this period was 12.56 days for female opposed to 11.6 days for male. The shortest period of life cycle was recorded when reared on (sugar cane + chitosan), whereas the longest period was recorded when the mite reared on (sugar cane +pollen+ chitosan). Fecundity was affected by rearing on different diets, the mean total number of deposited eggs 84.7, 88.9, 48 and 16.75 eggs when reared on (sugar cane), (sugar cane + pollen), (sugar cane + pollen +chitosan) and (sugar cane + chitosan) respectively. The most suitable diet was sugarcane with pollen followed by sugarcane at 27±2ºC and 65-70% R.H. for increasing female fertility. The net reproductive rate (R0 ) reached highest value when it reared on sugarcane+ pollen (35.076 females /female). However, the shortest value was obtained when it reared on Sugarcane+ Chitosan being 6.384 females /female. For the mean generation time (T), this period decreased with the add chitosan to (sugarcane) and (sugarcane+ pollen), it were averaged values 12.588 and 17.305. While, these values increased when reared on sugarcane (18.157) and sugarcane+ pollen (19.910).When the values of intrinsic rate of increase (rm) were converted into finite rate of increase (?), the population of P. gizaensis had the capacity decrease by 1.216, 1.195, 1.191 and 1.158 times/female/day when fed on obvious diets respectively. Th