Adjustable monkey wrench

An adjustable monkey wrench comprises a handle and a movable clamping component connected to one end of the handle, the movable clamping component comprises a first clamping portion connected to the handle, two fasteners penetrate through a second clamping portion to be movably connected to the first clamping portion to form an adjustable closed clamping space, and the interior of the space is used for fixing a screwed nut. By screwing the fastener, the size of the closed clamping space is adjusted, and the defect that a traditional fixed wrench is single in specification is overcome. Besides, the first clamping portion and the second clamping portion are evenly stressed and clamped on the two sides of the nut, the screwed nut is tightly meshed with the first clamping portion and the second clamping portion, the nut is not prone to slipping off in the using process, the nut is not abraded, and the nut clamping device is particularly suitable for nuts high in tightness and rusty nuts. 一种可调活口扳手，包括手柄，及连接在手柄其中一个端