Abstract:This paper, by systematically summarizing the five contributions to the development of the ILO in the past 100 years, demonstrates that the ILO plays an important role at critical historical times, and is closely linked to almost every event brought about changes in the society and labor. China has a long history with the ILO. In the aspects of labor legislation, values on employment promotion and the social security, and the institutional mechanism, the Chinese government, trade unions, and employers' organizations have adopted the useful experience and positive influence of the ILO and international labor standards, fulfilled its obligation of the member states of the ILO. Therefore, China needs to strengthen the basic and applied research into the ILO and international labor standards both in aspects of building harmonious labor relations and actively participating in international labor governance, so as to constantly strengthen its legal system construction of labor and social security and make contributions to promoting decent work and realizing social justice.