An ink pad container is detachably disposed on a fixing seat of a stamp and has a body. The body has a chamber formed in the body, a bottom surface, two opposite side surfaces, a front surface, an opening formed in the bottom surface of the body and communicating with the chamber, two positioning portions formed in the two opposite side surfaces of the body respectively, a front recess formed in the front surface of the body, a front stopper formed across the front recess of the body, and a front guiding groove formed between the front stopper and the front recess. The replacement of the ink pad container is made convenient and stable by the front stopper with single-point forcing.