The invention provides a portable high-frequency surface wave radar wave height inversion method which comprises the steps of firstly performing channel calibration on two monopole cross loops, and utilizing a traditional Barrick method, and obtaining a wave height inversion result at a short-distance element position; then calculating the ratio between a one-order peak and a two-order peak of the radar, and performing orientation by means of a MUSIC algorithm; and finally fitting the ratio between the one-order peak and the two-order peak through using the wave height which is obtained through a Barrick method, and obtaining the final output wave height of the radar. The portable high-frequency surface wave radar wave height inversion method increases measurement precision and measurement distance of wave height. Compared with a common one-two-order peak ratio algorithm, the method does not require calculation of a fitting coefficient by means of prior information such as float and satellite so that the wave height and the wave field can be acquired in real time.