The invention discloses a pen container, and provides a pen container capable of adjusting the depth. The pen container comprises a pen container body, a partition plate perpendicular to the bottom ofthe pen container body is arranged in the pen container body, the partition plate partitions the pen container body into a first cylinder body and a second cylinder body, a bottom plate is arranged at the bottom of the second cylinder body, an adjusting rod is arranged on the side edge of the bottom plate, a sliding groove used for allowing the adjusting rod to penetrate is formed in the cylinderwall of the second cylinder body, and a plurality of grooves matched with the adjusting rod are formed in one side groove wall of the sliding groove. According to the pen container, the pen containeris partitioned into two halves, the bottom plate of one half is adjustable in height and is used for adjusting the depth of the pen container, and a user can conveniently take small or short items.