The invention provides a tyre lifting device. The device comprises a support component and a clamping component, the support component comprises two long and straight support bars, a location block is connected to the middle of each support bar in a screwed mode, a threaded rod is connected inside a through hole of each location block in a sleeved mode, one end of each threaded rod extends out of the corresponding location block and is connected to a bearing sleeve in a screwed mode, the other end of each threaded rod extends out of the corresponding support bar, a crank is connected the end, extending out of the corresponding support bar, of each threaded rod in a screwed mode, each threaded rod is sleeved with a slide block, a threaded hole is formed in each slide block, an insertion block is further welded to the bottom of each slide block, an insertion opening is formed in one side wall of each insertion block, a universal wheel is further connected to the bottom of each insertion block in a screwed mode, an insertion block is also connected to the end, far away from the crank, of the bottom of each support bar in a screwed mode, a universal wheel is further connected to the bottom of each insertion block in a screwed mode, the clamping component comprises two insertion rods, one end of each insertion rod is matched with an insertion opening, and a universal wheel is also connected to the other end of each insertion rod in a screwed mode. The device is small in size and can be placed in a trunk conveniently only by dismounting the insertion rods when the device is not used.