According to one embodiment, a magnetic oscillation element includes a first electrode/a second magnetic layer/a nonmagnetic spacer layer/a first magnetic layer/a second electrode, stacked in this order. The first magnetic layer has variable magnetization direction. The second magnetic layer has fixed magnetization direction. A thickness of the first magnetic layer in a direction connecting the first and second electrodes is greater than 2 times a spin penetration depth of the first magnetic layer. The thickness of the first magnetic layer is less than a maximum width of the second electrode. The first magnetic layer has edge portion provided outside the first surface when viewed along the direction. A width of the edge portion in a direction perpendicular to a tangent of an edge of the second electrode is not less than an exchange length of the first magnetic layer.