The static component of the ultrasonic signal, also known as the zero-frequency signal, can be used as a nonlinear ultrasonic feature coefficient for the detection and imaging of early damage and microcracks in materials due to its advantages of small attenuation and easier accumulation in the guided wave. Based on this, a zero-frequency nonlinear ultrasound phased array probe with high and low frequency wafers vertically stacked on top and bottom is designed, which can receive zero-frequency signal more efficiently and thus improve the detection capability of nonlinear ultrasound detection technology. Firstly, a two-channel zero-frequency nonlinear ultrasound probe with the wafer vertically stacked on top and bottom is designed, and it is verified that it is more sensitive to zero-frequency signal than the traditional single-center-frequency probe. Secondly, four zero-frequency nonlinear ultrasound phased array probes with different numbers of low-frequency wafers but the same number of high-frequency wafers are designed by vertical stacking of top and bottom, and it is found that the number of low-frequency wafers can be appropriately reduced when designing zero-frequency nonlinear ultrasound phased array probes and the low-frequency wafer width is preferably no more than 1/4 of the lateral resolution of zero-frequency signal by comparing the received signals and the imaging effect. Finally, by comparing with the conventional single-frequency phased array probe, it is verified that the zero-frequency nonlinear ultrasound phased array probe can extract the zero-frequency signal more effectively.