The utility model discloses a crane capable of preventing unbalance, which comprises a trailer, a crane body is arranged on the trailer, a ground fixing mechanism is arranged on the outer side of the trailer, the ground fixing mechanism comprises a
hydraulic cylinder, a mounting shell, a motor, a taper sleeve, a spiral block and an auxiliary mechanism, the
hydraulic cylinder is mounted on the outer side of the trailer, the mounting shell is mounted at the bottom end of the
hydraulic cylinder, and the motor is mounted on the mounting shell. The motor is installed in the installation shell, the taper sleeve is rotationally installed on the bottom face of the installation sleeve and connected with the output end of the motor, the hydraulic cylinder is driven to work through the hydraulic
system, the installation shell is pushed downwards, preliminary contact and fixation with the ground are achieved, the taper sleeve is driven to rotate after the motor is started, and a spiral block on the taper sleeve is screwed into soil along a spiral path. A rotating
handle drives a center rod to rotate, a rotating sleeve rotates along with the center rod, then an inclined block is driven to move, the inclined block is matched with a contact block, the contact block pushes a sliding rod to slide, the sliding rod moves to push an inserting rod to be inserted into soil, and final fixing of the ground fixing mechanism is completed.