ELECTRONIC CONTROL DEVICE

To obtain, in an on-board control device, a shield effect against noise radiated from an electronic component. The present invention includes: an electronic component a metal housing which covers at least a part of the electronic component a metal portion which is provided so that the electronic component is disposed between the metal portion and the metal housing and a shield structure which shields radiation noise from the electronic component by electrostatic capacitive coupling formed between the metal portion and the metal housing