In a current detecting apparatus, a container member which constitutes a insulating housing includes an element supporting portion, a connector supporting portion, and a substrate fixing portion. The element supporting portion is formed with a depression to which a magnetism detecting portion of a Hall element is fitted. The connector supporting portion achieves positioning of a body portion of the connector by a fitting structure in three-dimensional directions where a lead terminal of a connector extends in parallel with lead terminals of the Hall element. The substrate fixing portion is a portion where a circuit board is fixed at one point. The body portion of the connector is also fixed to the circuit board with a screw.