The invention discloses a tensioning equipment safety suit application method. Angle iron is connected through bolts to form a steel frame, the double-layer protection combined by a rigid steel plate and a flexible wood plate is disposed at the back, a transverse rod is disposed on the upper portion, a hand-operated hoist which can slide is hung on the transverse rod, a jack is hung below the hand-operated hoist, wheels are mounted at the bottom of the steel frame, and a movable safety device is formed. A safety device has the advantages that the safety device is mainly made of angle iron commonly used in projects, and is wide in materials; the wheels are mounted at the bottom of the steel frame, so that the safety device can be moved without large hoisting devices, and is convenient to use; the angle iron is connected through bolts, so that the safety device is detachable, recyclable, safe and reliable.