PURPOSE: To attain the complete two, agrees of freedom in the whole PID and the advancement of PID control.

CONSTITUTION: This two-degrees-of-freedom adjusting device for separating integral operation from proportional/differential operation, entering an objective value and a controlled variable inputted from a controlled object, finding out a deviation between both the inputs by a deviation computing means 1, and then executing the integral operation based upon the deviation, an objective value supplying system for supplying an objective value SV to the means 1 is provided with an integration two-degrees-of-freedom computing means 21 having the transmission function of a unit controlled model setting up the gain of its transmission function to '1' and the device includes the controlled model for attaining the two degrees of freedom for the integration time.