The reliability of path planning calculation can be evaluated with low load without using multiplexing of calculation or an additional sensor. The electronic control device includes an integration unit that acquires information around a vehicle as sensor information from a plurality of sensors for each processing cycle, and integrates the acquired sensor information to create vehicle peripheral information for each processing cycle, a path planning unit that calculates a planned path on which the vehicle will travel in the future using the vehicle peripheral information for each processing cycle, and a path evaluation unit that evaluates reliability of the path planning unit, in which the path evaluation unit that uses, in the planned path calculated by the path planning unit in a first processing cycle, a position of the vehicle in a second processing cycle, which is a processing cycle after the first processing cycle, and the vehicle peripheral information created by the integration unit in the second processing cycle to evaluate the reliability of the path planning unit in the first processing cycle.