First, the hoist should be installed in a flat, solid, good line of sight of the site, the fuselage and anchor must be firm. The drum and guide wheel center line should be perpendicular to the straight line, the fuselage from the first guide pulley distance should be greater than 15 times the drum width. 2, before the operation, should check the wire rope, clutch, brake and so on is safe and reliable. 3. The steel wire rope must be arranged neatly on the winch, and at least three rings should be kept in use. Four, when lifting objects to stay in the air, in addition to the use of brakes, but also with Ratchet safety card firmly. 5. In the operation, the winch operator must obey the command signal and must not work if the signal is not clear. When the power is suddenly cut off in the operation, control measures should be taken immediately and the power should be pulled off, when there is no danger to determine the hanging cage down six, the hoist operator must hold a license on the post, is strictly prohibited from operating without a license, is strictly prohibited from leaving the post in the work. 7. It is forbidden to use the inverted smooth switch as the control switch of the winch 8. The winch operator must concentrate on the operation, and is not allowed to knit wool, read newspapers and so on.