A handled cover for water bag comprises a cover, a locking element and a connecter. The locking element is provided on the water bag for coupling with the cover. A handle integrally formed with a buckle ring is mounted on the locking element. Engagement clamps are correspondingly provided on the sides of the buckle ring, while a handle bar of special figure is provided on a side of the buckle ring. A hole is provided on the center of the handle bar. The connecter is connected to the outside of the cover, and provided with a strip in the form of a blunt-headed hook extruding from the rim. By way of having the strip passing through the locking hole on the handle, after the cover is released from the locking element, the cover would not depart from the handle via the connection of the strip on the connecter. And the handle may be freely dismounted and changed the position for resemblance, such that a user may carry the water bag to ease filling water or movement.