A sound processing method, wherein the method is applied to a terminal having two microphones at the top, the two microphones are respectively located on a front surface and a back surface of the terminal, and the method comprises: when a camera of the terminal is in a photographing state, acquiring sound signals of a current frame in a current environment of the terminal by using the two microphones; calculating an interaural level difference between the two microphones based on the acquired sound signals of the current frame according to a first preset algorithm; determining whether the interaural level difference between the two microphones for the current frame satisfies a sound source direction determining condition; if the sound source direction determining condition is satisfied, determining, based on the interaural level difference between the two microphones for the current frame, whether the sound signals of the current frame comprise a backward sound signal, wherein the backward sound signal is a sound signal whose sound source is located at the back of the camera; and if it is determined that the sound signals of the current frame comprise the backward sound signal, filtering out the backward sound signal from the sound signals of the current frame; wherein the determining whether the interaural level difference between the two microphones for the current frame satisfies a sound source direction determining condition, comprises: determining for each frequency point of the current frame whether a difference between a maximum value of the interaural level difference and a minimum value of the interaural level difference is greater than a first threshold, whereas the current frame comprises N frequency points, and if M frequency points of the N frequency points satisfy this determining condition, whereas M is greater than or equal to N/2: determining that the interaural level difference between the two microphones for the current frame satisfies the sound source direction determining condition. when a camera of the terminal is in a photographing state, acquiring sound signals of a current frame in a current environment of the terminal by using the two microphones; calculating an interaural level difference between the two microphones based on the acquired sound signals of the current frame according to a first preset algorithm; determining whether the interaural level difference between the two microphones for the current frame satisfies a sound source direction determining condition; if the sound source direction determining condition is satisfied, determining, based on the interaural level difference between the two microphones for the current frame, whether the sound signals of the current frame comprise a backward sound signal, wherein the backward sound signal is a sound signal whose sound source is located at the back of the camera; and if it is determined that the sound signals of the current frame comprise the backward sound signal, filtering out the backward sound signal from the sound signals of the current frame; wherein the determining whether the interaural level difference between the two microphones for the current frame satisfies a sound source direction determining condition, comprises: determining for each frequency point of the current frame whether a difference between a maximum value of the interaural level difference and a minimum value of the interaural level difference is greater than a first threshold, whereas the current frame comprises N frequency points, and if M frequency points of the N frequency points satisfy this determining condition, whereas M is greater than or equal to N/2: determining that the interaural level difference between the two microphones for the current frame satisfies the sound source direction determining condition. determining for each frequency point of the current frame whether a difference between a maximum value of the interaural level difference and a minimum value of the interaural level difference is greater than a first threshold, whereas the current frame comprises N frequency points, and if M frequency points of the N frequency points satisfy this determining condition, whereas M is greater than or equal to N/2: determining that the interaural level difference between the two microphones for the current frame satisfies the sound source direction determining condition.