Preparation system of maltitol seed crystal

The utility model relates to a preparation system of maltitol seed crystals. The preparation system comprises a cyclone separator, a first airlock, a rocking sieve, a second airlock, a seed crystal temporary storage tank, a third airlock and a sugar boiling tank which are sequentially communicated through pipelines. The cyclone separator is communicated with an air inducing pipeline of the maltitol drying system, the cyclone separator is communicated with the first air closing machine, and a discharging opening of the first air closing machine is communicated with a feeding opening of the swinging screen. A maltitol seed crystal discharge port of the rocking sieve is communicated with a feed port of a second air lock, a discharge port of the second air lock is communicated with a feed port of a seed crystal temporary storage tank, a weighing sensor and an eccentric motor are respectively arranged on the seed crystal temporary storage tank, and a discharge port of the seed crystal temporary storage tank is com