The invention discloses a hoisting method of a hyperbolic water-
tower water tank and a hoisting device. The hoisting method comprises the following steps of: firstly, prefabricating a water tank, installing
lifting equipment, and starting to lift after a real-load pressure test is qualified; during lifting, firstly, jacking steel beams and driving a steel strand to lift; after a
stroke is completed, utilizing a locking anchorage device to clamp the steel strand at a static steel beam, returning oil, then utilizing the locking anchorage device to clamp the steel strand onto a moving steel beam after falling back, thereby completing a hoisting cycle for one time; and repeatly lifting until the water tank is lifted to the position and then fixing. The hoisting device comprises a lifting part, a supporting part and a sling
assembly, wherein the lifting part comprises a moving steel beam, a static steel beam and a hydraulic lifting device arranged between the moving steel beam and the static steel beam; and the sling
assembly comprises a steel stand. The top of the steel stand penetrates through the moving steel beam and the static steel beam and is clamped on the steel beams through the locking anchorage device, and the bottom of the steel stand is connected with the water tank. The construction method and the device are simple in operation and have the advantages of low cost, low labor strength, low
energy consumption, strong safety and reliability and good quality of construction.