A mount structure for an electric unit is a mount structure for a PCU mounted in an engine room of a hybrid vehicle. The mount structure includes a vehicle body, the PCU mounted in the engine room, an engine mounted on the vehicle body and spaced from PCU, a cable connected to the PCU and having a portion positioned between the PCU and the engine, and a wire-protecting portion positioned between the PCU and the engine and keeping the distance between the PCU and the cable and the distance between the engine and the cable at respective distances that are at least distances necessary for wiring protection.