The invention discloses a hoisting device with an adjustable rotation angle. The hoisting device with the adjustable rotation angle comprises a rotation angle adjustment mechanism, a lubricating system, a head support leveling mechanism and a hoisting clamp. Two electric hoists are mounted at the two ends of a big semicircular gear. The rotation angle adjustment mechanism drives a pinion and the big semicircular gear to rotate on a guide rail in a head support through internal engagement, and accordingly, the electric hoists and a hoisted part are driven to rotate to achieve angle adjustment.The head support leveling mechanism keeps the head support horizontal through stretching and retreating of an electric push rod and keeps the head support horizontal through self locking of the electric push rod in a loaded state. The hoisting clamp comprises a clamping device and a retaining ring. According to the hoisting device with the adjustment rotation angle, the angle of the hoisted part is accurately controlled through a motor, and a lubricating device and a leveling device are additionally arranged, so that the problem of that the hoisted part deviates from a bolt hole when mounted is solved; through the cooperation of the retaining ring and the clamping device, the hoisted part is kept balanced in the hoisting process; and the hoisting device is convenient and fast to use, safeand reliable.