A kind of LED control circuit and method provide the fixed high frequency time pulse of responsibility cycle to LED driver, LED are made to issue the fixed high frequency flashing light of responsibility cycle. It can expel, obscure or trapping insects by the sensing difference of flash frequency, providing one kind on the mankind and insect visual, but the only LED light source of illumination or decoration functions to the human eye.一種LED控制電路與方法，提供責任週期固定的高頻時脈給LED驅動器，使LED發出責任週期固定的高頻閃光。藉由人類與昆蟲視覺上對閃光頻率的感測差異，提供一種可以驅逐、混淆或誘捕昆蟲，但對人眼而言僅有照明或裝飾功能的LED光源。
