The present invention relates to a method for treating lettuce seeds for increasing a germination rate wherein, more specifically, high temperature germination properties and a sprout expression rate at high temperatures of the lettuce seeds can be increased by impregnating the lettuce seeds with a solution at low temperatures before seeding the lettuce seeds. The method for treating lettuce seeds for increasing a germination rate includes the following steps: impregnating the lettuce seeds with distilled water washing the lettuce seed impregnated with water and drying the lettuce seeds at room temperature.COPYRIGHT KIPO 2016본 발명은 발아율 향상을 위한 상추 종자의 처리방법에 관한 것으로, 보다 상세하게는 파종 전의 상추 종자를 용액에 저온침지시킴으로써 상추 종자의 고온발아성 및 고온에서의 유묘출현율을 향상시킬 수 있는 상추 종자의 처리방법에 관한 것이다.