To develop new and improved pest management strategies against Trigonotylus caelestialium (Kirkaldy) (Heteroptera: Miridae), which is a major pest of rice in Japan, it is important to understand the mating behavior of this species. In this study, we examined the effect of mating on subsequent their mating receptivity, attractiveness to males in female T. caelestialium. After mating, females temporarily exhibited decreased mating receptivity and attractiveness to males, and mated females survived longer without food and water than virgin females; on the other hand, the life span of mated females with access to food and water was less than that for virgin females. In addition, the cumulative remating frequency and their attractiveness to males of females that mated with a male that had just mated with another female were higher than that of females who mated with virgin males. As a result, the male ejaculate should reduce female mating receptivity and attractiveness to males. Furthermore, I refer to male substances that reduce female receptivity and the volumes changes of female sex pheromones that attract males after mating.