According to the present invention, a steering control device having a manual steering mode in which a travelling direction of a vehicle is controlled in correspondence with a steering wheel state quantity indicating an operation quantity of a steering wheel provided at a vehicle and a compulsory automatic steering mode in which the travelling direction is controlled automatically, and controlling a steering wheel control quantity to be added to the steering wheel in accordance with the manual steering mode or the compulsory automatic steering mode, the steering control device is characterized by being provided with: steering mode selection means to switch between the manual steering mode and the compulsory automatic steering mode and steering wheel control quantity calculation means, in a case where the manual steering mode is selected by the steering mode selection means, to calculate the steering wheel control quantity to be added to the steering wheel based on information indicating travelling state, and in a case where the compulsory automatic steering mode is selected by the steering mode selection means, to calculate the steering wheel control quantity having a magnitude different from the steering wheel control quantity calculated in the manual steering mode based on the information indicating the travelling state.
