The utility model provides a prey on predation mite release of tobacco thrips in seedling stage, including top area open carrier storage box, establish the bracing piece of baffle on being equipped with it in its characterized in that carrier storage box, and keep off the plate size and be greater than the uncovered size of carrier storage box. Can block that the water droplet that condenses in tobacco leaf seedling shed top falls into the carrier conveniently through the baffle of setting in carrier storage box top, prevent that the carrier from mildening and rot because of weing and then influencing surviving of predation mite. In addition, lure the core through set up the thrips on vertical board, in thrips to the storage box region around can luring, let the predation mite in the box prey on the thrips to improve and prey on efficiency. The utility model discloses simple structure, convenient to carry, the effect is obvious.