A method and device for processing information are provided. The method for processing information includes: determining a current output voltage of a power supply in a terminal device; determining a target parameter of an audio processing circuit in the terminal device according to the current output voltage; and configuring the audio processing circuit for processing an audio signal according to the target parameter. With the embodiments of the present disclosure, an impact of a change of the output voltage of the power supply on output volume of a loudspeaker can be reduced, thereby improving user experience.