An acoustic feedback detection method, comprising: performing time-frequency conversion on a received time-domain signal to acquire a corresponding frequency-domain signal (S101, S201, S301); determining a power peak value based on the frequency-domain signal, and calculating a power sum value of a plurality of points around the power peak value and an average power value of the frequency-domain signal (S102, S202, S302); determining a judgment value based on the power sum value and the average power value (S103, S203, S303); determining a corresponding preset first threshold based on a frequency band range into which a frequency corresponding to the power peak value falls, and determining that the judgment value is a to-be-counted judgment value corresponding to the frequency band range in a case that the judgment value is greater than the preset first threshold (S104, S204, S304); and counting the number of to-be-counted judgment values corresponding to the frequency band range within a preset time period, wherein the acoustic feedback detection method is characterized in: determining a duration of the power peak value which falls into the frequency band range within a preset time period, and determining that acoustic feedback occurs in a case that the number of the to-be-counted judgment values is greater than a preset second threshold or the duration of the power peak value is greater than a preset third threshold (S105, S205, S305); when it is determined that acoustic feedback occurs, identifying whether an amplitude of the time-domain signal is less than a preset fourth threshold; attenuating the time-domain-signal in which the amplitude is less than the preset fourth threshold, to acquire a small signal attenuated time-domain signal; and attenuating the small signal attenuated time-domain signal in a manner that a gain coefficient gradually decreases to a target value, to acquire an acoustic-feedback suppressed signal. performing time-frequency conversion on a received time-domain signal to acquire a corresponding frequency-domain signal (S101, S201, S301); determining a power peak value based on the frequency-domain signal, and calculating a power sum value of a plurality of points around the power peak value and an average power value of the frequency-domain signal (S102, S202, S302); determining a judgment value based on the power sum value and the average power value (S103, S203, S303); determining a corresponding preset first threshold based on a frequency band range into which a frequency corresponding to the power peak value falls, and determining that the judgment value is a to-be-counted judgment value corresponding to the frequency band range in a case that the judgment value is greater than the preset first threshold (S104, S204, S304); and counting the number of to-be-counted judgment values corresponding to the frequency band range within a preset time period, wherein the acoustic feedback detection method is characterized in: determining a duration of the power peak value which falls into the frequency band range within a preset time period, and determining that acoustic feedback occurs in a case that the number of the to-be-counted judgment values is greater than a preset second threshold or the duration of the power peak value is greater than a preset third threshold (S105, S205, S305); when it is determined that acoustic feedback occurs, identifying whether an amplitude of the time-domain signal is less than a preset fourth threshold; attenuating the time-domain-signal in which the amplitude is less than the preset fourth threshold, to acquire a small signal attenuated time-domain signal; and attenuating the small signal attenuated time-domain signal in a manner that a gain coefficient gradually decreases to a target value, to acquire an acoustic-feedback suppressed signal. determining a duration of the power peak value which falls into the frequency band range within a preset time period, and determining that acoustic feedback occurs in a case that the number of the to-be-counted judgment values is greater than a preset second threshold or the duration of the power peak value is greater than a preset third threshold (S105, S205, S305); when it is determined that acoustic feedback occurs, identifying whether an amplitude of the time-domain signal is less than a preset fourth threshold; attenuating the time-domain-signal in which the amplitude is less than the preset fourth threshold, to acquire a small signal attenuated time-domain signal; and attenuating the small signal attenuated time-domain signal in a manner that a gain coefficient gradually decreases to a target value, to acquire an acoustic-feedback suppressed signal.