The present invention discloses an impact ice driller, which comprises a frame; a motor; a rotatable drill stem; a stationary element and a rotatable element disposed along a same axis and facing each other; wherein the stationary element is connected to the frame; the rotatable element is connected to the drill stem and synchronously moves with the drill stem as driven by the motor; the stationary element and the rotatable element each has an irregular surface capable of engaging with each other on each opposite surface, when the rotatable element rotates, the irregular surface of the stationary element and the irregular surface of the rotatable element can repeat engagement and separation, so that the rotatable element can repeat the movement along an axis relative to the stationary element. In this way, the drill stem can produce up-and-down impacts on ice cover ceaselessly in the ice drilling process with good ice drilling effect.