An audio denoising method, comprising: disposing a first microphone and a second microphone in a target environment, wherein the first microphone and the second microphone are disposed in different areas in the target environment; obtaining a first audio signal that is of a target acoustic source in a corresponding area and that is collected by the first microphone; obtaining a second audio signal that is in a corresponding area and that is collected by the second microphone; denoising the first audio signal based on the second audio signal, to obtain a third audio signal; obtaining a fourth audio signal played by a first speaker, wherein the first speaker is disposed in the target environment; and denoising the third audio signal based on the fourth audio signal, to obtain a fifth audio signal, wherein the fifth audio signal is an audio signal that is of the target acoustic source and that is obtained after interference is filtered out, wherein there are a plurality of second microphones, there are a plurality of second audio signals, and the denoising the first audio signal based on the second audio signal, to obtain a third audio signal comprises: separately performing the following processing on each second audio signal, to obtain a residual signal corresponding to each second audio signal: performing adaptive filtering on the second audio signal, to obtain a second filtered output signal; obtaining a second residual signal based on a difference between the first audio signal and the second filtered output signal; and obtaining the third audio signal based on a plurality of second residual signals. disposing a first microphone and a second microphone in a target environment, wherein the first microphone and the second microphone are disposed in different areas in the target environment; obtaining a first audio signal that is of a target acoustic source in a corresponding area and that is collected by the first microphone; obtaining a second audio signal that is in a corresponding area and that is collected by the second microphone; denoising the first audio signal based on the second audio signal, to obtain a third audio signal; obtaining a fourth audio signal played by a first speaker, wherein the first speaker is disposed in the target environment; and denoising the third audio signal based on the fourth audio signal, to obtain a fifth audio signal, wherein the fifth audio signal is an audio signal that is of the target acoustic source and that is obtained after interference is filtered out, wherein there are a plurality of second microphones, there are a plurality of second audio signals, and the denoising the first audio signal based on the second audio signal, to obtain a third audio signal comprises: separately performing the following processing on each second audio signal, to obtain a residual signal corresponding to each second audio signal: performing adaptive filtering on the second audio signal, to obtain a second filtered output signal; obtaining a second residual signal based on a difference between the first audio signal and the second filtered output signal; and obtaining the third audio signal based on a plurality of second residual signals. performing adaptive filtering on the second audio signal, to obtain a second filtered output signal; obtaining a second residual signal based on a difference between the first audio signal and the second filtered output signal; and obtaining the third audio signal based on a plurality of second residual signals.