For the matter of elevator, one of the multi-use facilities for unspecified public, the JIS has re-establishedand reformed to apply to the environment in South Korea for the past 20 years. In the aspect of safetyassurance, it was inevitable to suggest improved measures. The government, Ministry of Public Administrationand Security has secured the safety by enhancing the safety management functions in the elevator inspectionstandards and expanding its safety device measures. Further, the international inspection standard has beenintroduced, which is about unifying inspection standard system into the international standard code. In March14th 2012, the international standard (EN) has been amended and fully announced. Escalator and passengerconveyor among lift devices have several common danger factor that cause safety accident. First, the accidentcaused by decreased braking power of brake. Second, the accident caused by the rate difference betweenhandrail and tread-board. Third, the accident caused by defects of contraflow preventing device or carelessnessinspection. Fourth, the accident caused by wet tread-board or wet floor of platform which makes passenger slipand fall. As the improvements to prevent and reduce these negligent accidents, the inspection list to check andmethods should be subdivided and applied for each accident likelihood cause for safety managementenhancement and safety assurance of existing escalator and passenger conveyors. The escalators and passengerconveyors without safety devices in existence should be obliged to modify the part of the system or installadditional safety device. With making these measures obligations, it requires to improve the system to besuitable for the international inspection standard and to have measures to prevent safety accidents. It alsoneeds to arrange improvements for skid accident of tread-board by the external environment factors such assnow and rain.