Electric hammer is a kind of electric drill, which is mainly used to drill holes on concrete, floor, brick wall and stone. It is specialized in drilling holes on walls, concrete and stone materials, as well as multifunctional electric hammers. It can be used instead of ordinary electric drills and electric picks if it is adjusted to an appropriate position and equipped with a proper drill bit.

As the drill bit of the electric hammer rotates, it also produces rapid reciprocating movement (frequent impact) along the direction of the electric drill rod, so it can quickly drill holes on brittle cement concrete, stone and other materials. High grade electric hammers can use the change-over switch to make the drill bit of the electric hammer in different working states, that is, only rotating without impact, only impacting without rotation, both impacting and rotating.