The invention provides a loudspeaker sound equipment audio frequency calibration method applied to a mobile terminal; the mobile terminal comprises first loudspeaker sound equipment and second loudspeaker sound equipment; the method comprises the following steps: obtaining all frequency points of a first record file and audio frequency loudness corresponding to each frequency point; obtaining all frequency points of a second record file and audio frequency loudness corresponding to each frequency point; respectively forming a first curve and a second curve; forming an audio frequency calibration curve according to the first and second curves; obtaining the maximum value and minimum value of the audio frequency calibration curve, and comparing the maximum value and the minimum value with a preset gain scope; calibrating the second curve according to the audio frequency calibration curve when the upper limit value is bigger than the maximum value and the lower limit value is smaller than the minimum value. Before usage, the two loudspeaker sound equipment are calibrated, so the loudness of the two loudspeaker sound equipment or the loudspeakers can be consistent with the frequency response as possible.