Anti-interference system and method

The invention discloses an anti-interference system and method. The anti-interference system is applied to a mobile terminal and comprises: an instruction receiving unit, used for receiving a control instruction sent by a user; a voice receiving unit, used for receiving a voice signal; a first converting unit, connected with the voice receiving unit and used for converting the voice signal into a first kind of audio signal; a second converting unit, connected with the voice receiving unit and used for converting the voice signal into a second kind of audio signal; and a switching unit, respectively connected with the instruction receiving unit, the first converting unit and the second converting unit and used for switching an audio mode from the working mode of the first converting unit into the working mode of the second converting unit, or converting the audio mode from the working mode of the second converting unit into the working mode of the first converting unit according to the control instruction. In the anti-interference system, the audio mode can be switched by the switching unit according to whether a user wears a hearing-aid or not, in order to eliminate the interference on the user in a call process caused by wearing the hearing-aid.