The invention discloses a tea canister with a quantitative discharging function. The tea canister comprises a lower canister body and an upper canister body stretching inwards from the top of the lower canister body. A second canister cover is arranged in the upper canister body, the upper canister body is sleeved with a first canister cover, multiple foot pads are arranged at the bottom of the lower canister body, a third sliding groove is formed in the bottom of the lower canister body, a button is arranged in the third sliding groove, and a spherical ejector rod is arranged at the front endof the button. A second spring is arranged at the bottom of the button, a second sliding groove is formed above the third sliding groove, a first spring is arranged in the second sliding groove, theother end of the first spring is connected with a rectangular sliding plate, and a tea groove is formed in the middle of the rectangular sliding plate. First clamping strips are arranged on the innerwall of the side face of the lower canister body, second clamping strips are arranged on the inner wall of the bottom face of the lower canister body, and a discharge port is formed between the secondclamping strips. A rectangular metal piece is further arranged in the lower canister body, a first sliding groove is formed in the side face of the lower canister body, a thumbing piece is arranged at the upper end of the first sliding groove, and the bottom of the thumbing piece is connected with a screw. The device is simple in structure, convenient to operate and capable of achieving automaticsupply; and tea does not need to be taken by hand, so that cleanliness and sanitation are achieved, and the tea canister is good in sealing performance and suitable for long-term storage of the tea.