The invention belongs to the technical field of ice skates and particularly relates to a resetting device for ice skate blades of ice skates. The device comprises a base, a lower slide block, a sliderod support, a side slide block and an unlocking rod support. The lower slide block is provided with a containing groove for containing the ice skate blades, a locking positioning part is arranged atthe front end of the containing groove, and the unlocking rod support is fixedly connected to the side slid block; the slide rod support is arranged on the base, the side slide block is provided witha side slide block driving part, and when the lower slide block slides downwards, the side slide block driving part makes the side slide block slide in the unlocking direction of an unlocking rod; theice skate blades are fixed through the lower slide block, the ice skates are downwards trodden, the side slide block slides backwards, the unlocking rod is pulled, so that a limit pin is unlocked, the slide rod supporting rack pushes the slide rod to slide upwards, after the slide rod slides to the upper end of a slide rod groove, the side slide block is reset, so that the slide rod is locked bythe limit pin, and resetting is completed. In the whole resetting process, the ice skates only need to be downwards trodden, manual operation is not needed, and the device is easy and convenient to use.