Storage device capable of achieving classified storage

The storage device comprises a box body, a plurality of storage cavities are formed in the box body, a telescopic pipe is arranged in each storage cavity, the upper end of each telescopic pipe is fixedly connected with the upper end of the corresponding storage cavity, and the lower end of each telescopic pipe is designed to be closed. The inner bottom of each storage cavity is provided with a bolt connecting piece used for fixing the bottom end of the corresponding telescopic pipe. The end cover is taken down, then the opening in the upper end of the storage cavity faces the position where air needs to be collected, the lower end of the telescopic pipe is moved, the telescopic pipe stretches through the sliding connecting piece, external air is sucked into the telescopic pipe at the moment, then the end cover is rapidly closed, then the end of the telescopic pipe is fixed through the bolt connecting piece, and collection is completed. The gas collecting process is fast and convenient, meanwhile, classified s