And an object thereof is to provide a magnetic detection device downsizing and thinning.
Magnetic detection device of the present invention (1) includes a substrate (S), is disposed on one side of the substrate, the first magneto-sensitive wire which is sensitive to an external magnetic field component in the first axis direction that extends (W1) first 1 magnetosensitive and a first magneto-impedance element consisting the first detection coil circling (C1) (MI element) wire. First detection coil according to the present invention comprises from left coil portion coexist along the first magnetosensitive wire and (C11) right coil portion and (C12), further, on the middle of the left coil portion and the right side coil portion third axial magnetic field comprising an external magnetic field component from a first axial direction of the measuring soft magnetic material that can be deflected to the magnetic field component that intersects at least a portion on the other side or base in a plate of the substrate is disposed on the substrate It provided with a deflection body (F1). Then, the external magnetic field component in the third axis direction can be detected on the basis of the left output obtained from the left coil portion and the right output obtained from the right coil unit.