The invention discloses a displacement control method of an electro-hydraulic executer. A segmented PID closed-loop control method is used for indirectly controlling the displacement of an output shaft of a hydraulic cylinder in the electro-hydraulic executer, the displacement, collected by a displacement sensor, of the output shaft in the hydraulic cylinder serves as the feedback quantity to participate in closed-loop control, the output execution amount is controlled to be the rotating speed and the steering direction of a servo motor, and a temperature compensation method is used for compensating for the overall temperature drift of the electro-hydraulic executer. The control efficiency of the control method is improved, the control precision of the control method is improved, errors caused by the temperature drift are eliminated, and the control precision of the electro-hydraulic executer under the multi-load work condition is met.