Abstract: A swing-type wrench includes a handle, a drive head pivotally mounted on a first end of the handle, and an engaging member secured on the handle and having a substantially polygonal-shaped cross-sectional outer periphery. Thus, the engaging member engages an aid tool, such as an open-ended spanner or the like, so that the user can hold the handgrip of the handle and the aid tool to facilitate rotation of the handle so as to rotate the driving stud of the drive head easily and conveniently, thereby saving the manual work, and thereby facilitating the user operating the driving stud of the drive head to rotate a workpiece, such as a bolt, a nut or the like.