The invention discloses a self-adaptive denoising method based on VMD. The method comprises the following steps of 1, respectively acquiring a first vibration signal and a second vibration signal, andobtaining a first mode and a second mode after the first vibration signal and the second vibration signal are decomposed through VMD; 2, respectively calculating a correlation coefficient between each mode of the first vibration signal and the second vibration signal and a correlation coefficient between each mode of the second vibration signal and the first vibration signal; 3, respectively determining a first parameter of leakage signals that the first mode contains and a second parameter of leakage signals that the second mode contains; 4, performing normalization treatment on the first parameter and the second parameter to obtain the signal definition; and 5, reconstructing extracted modes to obtain denoising leakage signals. The invention further discloses an application of the self-adaptive denoising method based on VMD in the water supply pipeline leakage position.