The invention discloses a novel tea storage box which comprises a sliding block, an observation window, a pot nozzle, a pot lid, a barrel body, an external thread, a box cover, a base, an inner cavity, a through hole, a filter net, iron powder, an internal thread and a groove. A dual-layer structure is adopted, the base, the box cover and the barrel body are in threaded connection, sealing performance is good, the iron powder is contained in the base and the box cover so as to absorb moisture in the inner cavity, and it is ensured tea is prevented from going moldy or bad. The inner cavity is of a transparent cylindrical structure, the barrel body is of a non-transparent cylindrical structure, tea is located in a dark environment, the side wall of the barrel body is provided with the observation window and the sliding block, observation can be achieved at any time, tea can be kept out of the sun, and meanwhile the quality of tea is not reduced. The side wall of the barrel body is provided with the pot nozzle, tea is directly poured out of the pot nozzle, convenience is brought to drinking, and the quality of tea is ensured. The bottom end of the inner cavity is provided with the filter net, tea residue can be filtered away, the quality of tea is improved, and cleaning is convenient.