Field experiment was conducted at Ly Nhan, Ha Nam province during summer crop in 2010 on rice cultivar Khang dan 18. The results showed that on Khang dan 18, in early summer crop, at density of Panicle Rice Mite Steneotarsonemus spinki (PRM) 2.13 - 2.85 mites/shoot and damage ratio 11 - 35 percent at 7 days before flowering caused 19.39 - 29.16 percent reduction of the yield. While on the hybrid PC15 and glutenous rice 97 at late season after 14 days before flowering at density of 35.78 - 36.03 mites/shoot and damage ratio 47 - 71 percent caused reduction of the yield by 23.79 - 37.29 percent. Spraying with Kinalux 25EC 14 or 7 days before flowering gave good protection. But spraying 2 days before flowering gave the highest result. Current procedures for integrated management of PRM was easy and resulted in an increase of 52.88 percent of the yield and 14.00 million VND per hectar.