The invention discloses a mixing device of an insecticide intermediate, wherein the mixing device includes a mixing bottle body; an opening is formed at the top of the mixing bottle body; a spray nozzle is arranged at the opening and is connected with a liquid suction pipe extending to the interior of the mixing bottle body; the mixing bottle body is internally provided with a partition plate which is arranged horizontally; a storage cavity body is divided into two sub cavity bodies by a partition plate which is arranged vertically; a part, below each sub cavity body, of the partition plate isprovided with a material passing hole, the partition plate of each sub cavity is movably connected with a rotating disc, and each rotating disc is provided with a material control hole matched with the material passing hole. The mixing device can be used for storing and containing the insecticide intermediate and reaction materials, and when the insecticide intermediate is needed to be used, theinsecticide intermediate and the reaction materials are subjected to a mixing reaction to obtain an insecticide, the insecticide is prepared when in use, the modification of the insecticide is avoided, and the mixing device can also act on an insecticide spraying device to directly spray the insecticide, the insecticide is not needed to be poured into other spraying devices, and thus the burden ofworkers is alleviated.