Phase shifter is a key component in wireless communication system and phased array radar receiver, which is used to regulate and equalize signal phase. In this paper, a numerical control phase shifting element based on differential circuit structure and RC element is proposed. The phase shifting element can gain the phase difference of output signal through a scanning pulse control of the differential tube in turn. The phase shifting value can be adjusted by changing the parameters of RC element. An eight-stage cascade model is constructed by using the proposed Numerical Control(NC) phase shifter element, and a 360° tandem NC phase shifter is realized. Simulation results obtained by Multisim software verify the effectiveness of the design of NC phase shifter, and the test results of hardware implementation show that the design of multistage tandem NC phase shifter works well with high precision of 1.4°, and realizes the phase shift control in the full cycle range. The realization of the NC phase shifter provides an important technical support for the timely and flexible calibration of the phase error of the receiving system.