Traction wire rope is an important linkage of the elevator, which supports the full weight of cabin and counterweight; and the rope relies on the friction of the traction sheave groove to drive cabin lift up and down. During the elevator running, traction wire will bend unidirectionally or alternately around the traction sheave, deflector sheave or diversion sheave, resulting in tensile stress. Therefore, traction wire rope should have higher strength and stronger wear resistance; its tensile strength, elongation, flexibility etc. should comply with GB8903 standard. Traction wire rope’s damaged degree and carrying capacity is directly related to the safety of passengers’ life and property, so it’s especially important to do periodic inspection and lubrication maintenance.