Provided is a hole-belt-type buffering gear self-adaptation sliding block lifter. The hole-belt-type buffering gear self-adaptation sliding block lifter comprises a driving mechanism and a lifter support. The hole-belt-type elastic piece buffering gear self-adaptation sliding block lifter is characterized in that the upper end and the lower end of the long-strip-shaped lifter support are provided with a transmission belt driven gear and a transmission belt driving gear respectively, and the transmission belt driven gear is connected with the transmission belt driving gear through a transmission belt in a transmission mode; the position, between the transmission belt driven gear and the transmission belt driving gear, of the lifter support is provided with two guide slots, namely the left side belt guide slot and the right side belt guide slot, the transmission belt penetrates through the two guide slots, the rabbets of the guide slots flange outward to form sliding rails, a sliding block used for installing of car window glass is fixed on the transmission belt, and a sliding slot of the sliding block is clamped on the sliding rails; the transmission belt driving gear is connected with the driving mechanism. The hole-belt-type buffering gear self-adaptation sliding block lifter has the advantages that the contact area of the transmission belt of the lifter and transmission gears is large, abrasion is automatically compensated by the sliding block, and the fault occurrence rate during the utilization process of the lifter is reduced; a driving gear is used as a buffering gear, the protect effect is provided for the gear, and the service life of the lifter is prolonged.