Abstract: A geoacoustic parameter inversion method using the distributed mobile underwater acoustic sensor network is proposed to realize rapid inversion in a large ocean area. The distributed network nodes are projected to synthesize horizontal line arrays with different element spacings for matching field geoacoustic parameter inversion using a frequency-domain coherent objective function. The positioning error is considered as a parameter for inversion and the Doppler compensation is implemented through correction of horizontal wavenumbers, by which the robustness of the mobile network inversion is improved. Numerical simulations and processing results of sea trial data have verified the effectiveness of the geoacoustic parameter inversion method using a distributed mobile underwater acoustic sensor network.