On September 6, 2018, Hokkaido Eastern Iburi Earthquake was occurred. The center of this earthquake is Atsuma of Iburi region. Moreover, the maximum seismic intensity was 7. After this earthquake, the authors investigated RC buildings and foundation damages in Iburi and Hidaka regions. As the result of the survey, however very sever damages were not confirmed, there were minor damages at RC nonstructural walls, RC expansion joints and foundations on banking. Therefore, a structural design methods are required for these members.