A speech recognition method, comprising: obtaining audio signals collected by microphones in at least two sound zones; determining (S 102) whether each audio signal comprises a key speech according to sound energy of the audio signal to acquire a determined result; adjusting a step size of an adaptive filter in each sound zone according to the determined result; controlling the adaptive filter to perform adaptive filtering processing on the audio signal collected in the sound zone corresponding to the adaptive filter according to the step size, so that the audio signal of the sound zone where the audio signal includes the key speech is enhanced, and the audio signal of the sound zone where the audio signal does not include the key speech is weakened accordingly, and outputting a filtered signal; and performing speech recognition on the filtered signal; characterized in that the determining whether each audio signal comprises the key speech according to the sound energy of the audio signal comprises: inputting the audio signal to a blocking matrix corresponding to the sound zone, and determining the sound zone as a current sound zone of the blocking matrix; determining, for the blocking matrix, at least one reference signal of the current sound zone based on an audio signal of the current sound zone and audio signals of at least one non-current sound zone, wherein the at least one reference signal is configured to strengthen environmental noises other than the key speech in the current sound zone; and performing comparison on sound energies of reference signals of the at least two sound zones to obtain a comparison result, and determining whether the audio signal comprises the key speech according to the comparison result. obtaining audio signals collected by microphones in at least two sound zones; determining (S 102) whether each audio signal comprises a key speech according to sound energy of the audio signal to acquire a determined result; adjusting a step size of an adaptive filter in each sound zone according to the determined result; controlling the adaptive filter to perform adaptive filtering processing on the audio signal collected in the sound zone corresponding to the adaptive filter according to the step size, so that the audio signal of the sound zone where the audio signal includes the key speech is enhanced, and the audio signal of the sound zone where the audio signal does not include the key speech is weakened accordingly, and outputting a filtered signal; and performing speech recognition on the filtered signal; characterized in that the determining whether each audio signal comprises the key speech according to the sound energy of the audio signal comprises: inputting the audio signal to a blocking matrix corresponding to the sound zone, and determining the sound zone as a current sound zone of the blocking matrix; determining, for the blocking matrix, at least one reference signal of the current sound zone based on an audio signal of the current sound zone and audio signals of at least one non-current sound zone, wherein the at least one reference signal is configured to strengthen environmental noises other than the key speech in the current sound zone; and performing comparison on sound energies of reference signals of the at least two sound zones to obtain a comparison result, and determining whether the audio signal comprises the key speech according to the comparison result. inputting the audio signal to a blocking matrix corresponding to the sound zone, and determining the sound zone as a current sound zone of the blocking matrix; determining, for the blocking matrix, at least one reference signal of the current sound zone based on an audio signal of the current sound zone and audio signals of at least one non-current sound zone, wherein the at least one reference signal is configured to strengthen environmental noises other than the key speech in the current sound zone; and performing comparison on sound energies of reference signals of the at least two sound zones to obtain a comparison result, and determining whether the audio signal comprises the key speech according to the comparison result.