A ball joint orientation device applicable to a unipod includes a ball joint and stop members, in which one end of the ball joint is formed as a rotating part and is arranged in a ball joint seat in a universal swaying manner, and the other end extends to form a connecting part and is fixedly connected with a main rod; the stop members are arranged in the ball joint seat, and include a locking stop member located at the upper side of the rotating part; an orientation knob is sleeved on the connecting part and/or the main rod; when screwed toward the direction close to the ball joint seat, the ball joint is subjected to orienting locking and no longer rotates; and when screwed toward the direction away from the ball joint seat, and the orienting locking is released, so the ball joint is rotatable freely.