To provide a vehicle operation device capable of quickly corresponding even to sudden change of surrounding circumstances by using model prediction control.

A standard performance function with respect to a system model is compared with a reference performance function used in actual manipulated variable calculation, and the reference performance function is corrected such that the reference performance function matches stepwise with the standard performance function. When there is an anomaly in the calculation process, convergence of calculation is accelerated by changing the reference performance function to an initial performance function.