Onion thrips (Thrips tabaci Lindeman) ((Thysanoptera: Thripidae) is the major pest attacking onion crops on the Egyptian fields during seasons 2023 and 2024. The total average populations were 652.70 in the first season and 677.33 in the second season, the highest peak were recorded on the 4^th week of April with average 110.48 and 99.53. Different insecticides were used to study its effectiveness on thrips as Dinotefuran, acetamiprid, abamectin + thiamethoxam, spirotetramat, spinosad, spintorame, chlorophanpyar, fenopethrin + etoxal and acetamiprid + bifenthrin. After 24 hours all compound recorded the highest reduction than after 3,7 and 10 days, the highest reduction was recorded with spintorame by 97.32±1.36and 96.93±0.96%. On the third day, Spirotetramat recorded the highest reduction by 95.21±1.22and 92.60±2.40%. On the seventh day, chlorophanpyar recorded the highest reduction by 83.52±1.74 and 81.62±2.60%. On the tenth day also chlorophanpyar recorded the highest reduction by 72.40±0.87 and 69.30±1.85%. Chlorophanpyar was recorded the highest overall average by 85.42±5.35and 82.79^a±4.60 %.