Abstract: In this study, safety certification system of temporary equipment and materials established in domestic and foreign countries are compared and how to improve it and how to secure the safety are suggested. Validity of the system is investigated based on the internet and/or field visit surveys and an actual implementation of the system has been investigated for currently used temporary equipment and materials. Survey results show that an appropriateness of the items, required for an approval of the safety certification is ‘yes(36%)’, ‘no(30%)’, and ‘unknown(24%)’, respectively. Most of respondents answer that the current system does not reflect the transitional change of construction environments. In this study, the items of the current safety certification system, its size, its practicability, and the certification methods are reevaluated and then the improvement schemes of the system are provided.