A sound effect control method, comprising: when a hands-free call is performed for a mobile terminal, detecting whether a hands-free call channel of the mobile terminal is shielded; and adjusting a configuration of the hands-free call channel of the mobile terminal and/or outputting an alarm signal to inform a user that the hands-free call channel is shielded, when it is detected that the hands-free call channel of the mobile terminal is shielded (S120, S240, S340, S440, S540), wherein the detecting whether a hands-free call channel of the mobile terminal is shielded comprises: detecting whether a microphone of the mobile terminal is shielded; and detecting whether a speaker of the mobile terminal is shielded, wherein the detecting whether a speaker of the mobile terminal is shielded comprises: detecting an amplitude H 1 of a first sound and an amplitude H 2 of a second sound; and when H 1 - H 2 ≥ H 3 and it is determined that the microphone is not shielded, determining that the speaker is shielded; wherein H 3 represents a third threshold; the first sound is a sound that is picked up inside the mobile terminal and to be output by the speaker, and the second sound is a sound that is picked up by the microphone and that is obtained after the first sound is output by the speaker. when a hands-free call is performed for a mobile terminal, detecting whether a hands-free call channel of the mobile terminal is shielded; and adjusting a configuration of the hands-free call channel of the mobile terminal and/or outputting an alarm signal to inform a user that the hands-free call channel is shielded, when it is detected that the hands-free call channel of the mobile terminal is shielded (S120, S240, S340, S440, S540), wherein the detecting whether a hands-free call channel of the mobile terminal is shielded comprises: detecting whether a microphone of the mobile terminal is shielded; and detecting whether a speaker of the mobile terminal is shielded, wherein the detecting whether a speaker of the mobile terminal is shielded comprises: detecting an amplitude H 1 of a first sound and an amplitude H 2 of a second sound; and when H 1 - H 2 ≥ H 3 and it is determined that the microphone is not shielded, determining that the speaker is shielded; wherein H 3 represents a third threshold; the first sound is a sound that is picked up inside the mobile terminal and to be output by the speaker, and the second sound is a sound that is picked up by the microphone and that is obtained after the first sound is output by the speaker. detecting whether a microphone of the mobile terminal is shielded; and detecting whether a speaker of the mobile terminal is shielded, wherein the detecting whether a speaker of the mobile terminal is shielded comprises: detecting an amplitude H 1 of a first sound and an amplitude H 2 of a second sound; and when H 1 - H 2 ≥ H 3 and it is determined that the microphone is not shielded, determining that the speaker is shielded; wherein H 3 represents a third threshold; the first sound is a sound that is picked up inside the mobile terminal and to be output by the speaker, and the second sound is a sound that is picked up by the microphone and that is obtained after the first sound is output by the speaker. detecting an amplitude H 1 of a first sound and an amplitude H 2 of a second sound; and when H 1 - H 2 ≥ H 3 and it is determined that the microphone is not shielded, determining that the speaker is shielded; wherein H 3 represents a third threshold; the first sound is a sound that is picked up inside the mobile terminal and to be output by the speaker, and the second sound is a sound that is picked up by the microphone and that is obtained after the first sound is output by the speaker.