This paper reports a direct measurement of the vibration induced by the contraction of human iPS cell-derived cardiomyocytes (hiPSC-CMs) in vitro. In our proposed method, the vibration of the cells was measured by a highly sensitive MEMS cantilever located close to (distance: several tens mu m) but not in contact with the cells. As a result, the small pressure of approximately 10 mPa emitted from hiPSC-CMs' contraction was measured.