The invention relates to a threading type hydraulic elevator. The threading type hydraulic elevator comprises an elevator shaft, an elevator car, a hydraulic cylinder, a pulley rope set, a counter-weight set, a prestress mechanism, a hydraulic unit, a hydraulic pipeline, an electronic control center, sensing assemblies and signal lines. The hydraulic cylinder is vertically fixed to the bottom or the side wall of the elevator shaft, and the top of the hydraulic cylinder is connected with the prestress mechanism. The pulley rope set is fixed to the position near the top of the elevator shaft, one end of a steel wire rope of the pulley rope set is connected with the elevator car, and the other end of the steel wire rope is connected with the counter-weight set. The sensing assemblies are connected with the electronic control center through the signal lines. The hydraulic unit is connected with the electronic control center through a control and feedback signal line. The hydraulic cylinder is connected with the hydraulic unit through the hydraulic pipeline. A movement compartment of the hydraulic cylinder is connected with the elevator car. The threading type hydraulic elevator adopts a belt type hydraulic lateral lifting hydraulic cylinder, as an unstability problem of a traditional pressure level does not exists, the stability and the stroke/lifting height of the hydraulic elevator are improved, the structure is compact, the needed shaft space is small, and meanwhile, the personal safety of people taking the elevator is guaranteed.