| Sept. 1969 | Special Committee on the Institute of Gerontology (tentative name) was organized by order of the Governor. |
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| July. 1970 | Construction of the building began. |
| Oct. 1970 | The Preparatory Committee for Setting-up of the Institute of Gerontology (tentative name) was organized |
| Mar. 1972 | Construction of the building was completed.. |
| Apr. 1972 | The Tokyo Metropolitan Institute of Gerontology (TMIG) was formally opened. |
| Oct. 1981 | TMIG was reorganized and became a private foundation to promote active and creative research. |
| Sept. 1984 | Agreement was reached on research collaboration between TMIG and the National Institute on Aging of the United States. |
| June. 1986 | MIG was designated by The World Health Organization as a WHO Collaborating Center for the Health of the Elderly. |
| Mar. 1988 | Research collaboration was established between TMIG and the Beijing Geriatric Institute, Capital Institute of Medicine, the People's Republic of China. |
| Sept. 1988 | Scientific cooperation was established between TMIG and the Institute of Gerontology, Academy of Medical Science, Ukraine. |
| Aug. 1990 | TMIG reorganized its laboratories into six divisions. |
| Apr. 1998 | TMIG recognized its laboratories into eight division and Positron Medical Center. |
| Apr. 2002 | TMIG and a foundation for regional welfare for senior citizens and the disabled were rnerged in the Tokyo Metropolitan Foundation for Research on Aging and Promotion of Human Welfare. The research group system was introduced. |
| Apr. 2005 | The core research system was introduced. |
| Apr. 2009 | Tokyo Metropolitan Institute of Gerontology (TMIG) and Tokyo Metropolitan Geriatric Hospital (TMGH) were merged and established new organization as Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology( TMGHIG). |
| May. 2013 | In spring of 2013, a new facility was constructed |
