The invention relates to an acoustic event detecting method, in particular to an acoustic event detecting method under the hospital noise environment. According to the acoustic event detecting methodunder the hospital noise environment, voice is accurately recognized to be text, the recognition rate of an electronic medical record input through the voice is increased, and the false recognition rate is decreased. The acoustic event detecting method comprises the following steps that 1, feature intercepting is conducted on an audio signal of each acoustic event, and audio clips of the audio signals are marked correspondingly; 2, an MFCC feature coefficient of each target acoustic event in audio is extracted; 3, voice phonemes are aligned; 4, feature matrixes of the voice are generated; 5, aCRNN model is established for each target acoustic event; 6, the audio signals of the to-be-detected target acoustic events collected in real time under the hospital noise environment are pre-processed, and then MFCC feature extraction is conducted; 7, the category of the to-be-detected target acoustic events is obtained; and 8, the audio clips irrelevant to the target acoustic events are filed out.