Abstract: The embodiments of the present disclosure provide a method and a system for leakage analysis of an urban pipeline, and a storage medium. The method includes: obtaining sample signal data of an original signal and a corresponding first waveform diagram; obtaining at least two first components and a second component by processing the sample signal data based on preset iteration operations; determining a mutual information entropy of two adjacent first components in the at least two first components; determining high-frequency signal data of the original signal based on the mutual information entropy; determining an effective characteristic signal and a corresponding second waveform diagram based on the high-frequency signal data and the sample signal data; determining whether the urban pipeline leaks based on the second waveform diagram; and in response to that the urban pipeline leaks, determining a leakage aperture of the urban pipeline based on the effective characteristic signal.