Sampling device

The utility model provides a sampling device which is rapid and convenient in sampling, better in sealing performance, accurate in sampling quantity and capable of preventing samples from being polluted by impurities effectively.The sampling device comprises a sample storage container, wherein a sealing cover is arranged at the top of the sample storage container, a liquid inlet hole is formed in the sealing cover, a liquid suction pipe extending outwards is inserted in the liquid inlet hole and communicated with the inside of the sample storage container, a sealing block is arranged below the liquid inlet hole and in the sealing cover, a sampling functional pipe fixedly communicated with the sealing cover is arranged on the side of the sealing cover, an expansion spring and a push-pull rod are arranged in the sampling functional pipe, the side of the sealing block is connected with the expansion spring, the other end of the expansion spring is connected onto the push-pull rod, an operating head convenient to