According to one embodiment, a strain sensing element includes a film unit, and a sensing unit. The film unit has a film surface and is capable of being deformed. The sensing unit includes a first sensing element and a second sensing element. The first sensing element is provided between a part of the film unit and the second sensing element. The first sensing element includes a first magnetic layer having a changeable magnetization with a deformation of the film unit, a second magnetic layer provided apart from the first magnetic layer, and a first spacer layer provided between the first and second magnetic layers. The second sensing element includes a third magnetic layer having a changeable magnetization with the deformation of the film unit, a fourth magnetic layer provided apart from the third magnetic layer, and a second spacer layer provided between the third and fourth magnetic layers.根據一實施例，應變感測元件包含膜單元及感測單元。膜單元具有膜表面及能夠變形的。感測單元包含第一感測元件及第二感測元件。第一感測元件設在部份膜單元與第二感測元件之間。第一感測元件包含具有可隨膜單元的變形而變的磁化之第一磁層、設置成與第一磁層分開的第二磁層、及設在第一磁層與第二磁層之間的第一間隔器層。第二感測元件包含具有可隨膜單元的變形而變的磁化之第三磁層、設置成與第三磁層分開的第四磁層、及設在第三與第四磁層之間的第二間隔器層。
