The invention provides a novel digital hydraulic servo cylinder. The novel digital hydraulic servo cylinder comprises a front end cover, a cylinder body, a piston rod, a screw rod, a slide valve core,sealing parts, a rear end cover, a motor seat and a motor, wherein the cylinder body is hollow and is provided with a cavity, the front end cover and the rear end cover are provided with center holescorrespondingly, the piston rod comprises a piston rod body and a piston head, the diameter of the piston rod body is slightly less than that of the center hole of the front end cover, the diameter of the piston head is slightly less than that of the cavity of the cylinder body, an inner hole of the slide valve core is machined with threads, the threads are matched with the screw rod to form a screw pair, an internal through hole of the screw rod communicates with an oil box through an oil return hole, the motor seat is fixed to the rear end cover, and the motor is installed to the motor seat. By means of the novel digital hydraulic servo cylinder, speed control and position control of a traditional complex hydraulic servo cylinder are changed into the simple minitype digital motor control, the one-to-one correspondence between digital pulse frequency and oil cylinder speed and the one-to-one correspondence between digital pulse total amount and cylinder stroke are realized, and the structure of the servo hydraulic cylinder is greatly simplified.