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The multi-channel weak current signal is interfered by many noise factors, which leads to the increase of the relative error of the weak current signal output. Therefore, a multi-channel weak current signal noise control method based on empirical wavelet transform is proposed. Collect multi-channel weak current signal, decompose the collected weak current signal using empirical wavelet transform technology, judge whether there is noise in the current signal and determine the type of noise. A weak current signal noise controller is installed to generate control instructions according to the amount and type of noise in the current signal to control the weak current signal noise in different channels. The experimental results show that the signal to noise ratio of the multi-channel weak current signal is high, the relative error between the output signal and the original signal is small, and the multi-channel weak current signal noise can be controlled by this method.