The biology and life table of three acarid mites, Tyrophagus putrescentiae (Schank), Sancassania (Caloglyphus) berlesei (Michael), and Caloglyphus manure (Eraky & Osman) fed on baker's yeast at 25±2°C and R.H 70±10%. T. putrescentiae, C. manure, and S. berlesei had respective life cycles of 12.35, 7.47, and 11.1 days for females and 10.4, 5.9, and 10.2 for males. The average female life span was 39.95, 22.5, and 32.4 days, while the average male life span was 23.9, 17.2, and 26.16 days. The mean generation time (T) for the afore mentioned three mites was 16.35, 10.97, and 15.30 days, while their net reproductive rates (R0) were 174.57, 337.36 and 187.86 times, respectively. The net rate of natural increase (rm) for T. putrescentiae, C. manure and S. berlesei was 0.597, 0.950, and 0.640 individual /day, while the finite rate of growth (erm) averaged 1.82, 2.59, and 1.90 time /day, respectively.