Abstract: A hand tool is sleeved in a detachable handle case. The hand tool includes an elongated handle and a tool head extended from a first end of the handle, wherein the handle has a peripheral surface and a first retention structure formed thereon. The detachable handle case includes a handle sleeve having a hollow structure for receiving the handle of the hand tool therein and defining an inner surface and an outer surface. The handle sleeve includes an anti-slip arrangement formed at the outer surface and a second retention structure formed on the inner surface to engage with the first retention structure for preventing a relative movement between the handle sleeve and the handle.