The invention provides a portal crane pull-type correcting device which has the advantages that a hanging cable which can be adjusted in real time is arranged, so that a condition that the position of a lifting appliance does not generate the large deviation is always guaranteed, and the portal crane pull-type correcting device has a good anti-swing deviation-correcting effect. The portal crane pull-type correcting device provided by the invention comprises a portal crane, wherein a left support is provided with a left take-up wheel, and a right support is provided with a right take-up wheel; a left hanging cable is wound on the left take-up wheel, a right hanging cable is wound on the right take-up wheel, and the left hanging cable and the right hanging cable are respectively connected with the left and right sides of the lifting appliance; the left take-up wheel and the right take-up wheel are respectively connected with a left driving mechanism and a right driving mechanism, the left driving mechanism is capable of controlling the left hanging cable to wind and unwind, and the right driving mechanism is capable of controlling the right hanging cable to wind and unwind; the left take-up wheel and the right take-up wheel can slide up and down along a support.