A method for waking up a voice recognition function in a mobile terminal, comprising: receiving a trigger instruction of an input interface, and activating the input interface; acquiring a rotation angle of the mobile terminal in a first rotation direction with an x-axis as a rotation axis, when a bottom end of the mobile terminal is tilted up and moved towards a user while a top end of the mobile terminal moves downward, wherein the x-axis is a widthwise direction of a screen of the mobile terminal; and acquiring an acceleration of the mobile terminal, wherein the acceleration comprises a first acceleration of the mobile terminal in a direction along a y-axis and a second acceleration of the mobile terminal in a direction along a z-axis, and the y-axis is a longitudinal direction of the screen of the mobile terminal, and the z-axis is perpendicular to the screen of the mobile terminal; determining, according to the first acceleration and the second acceleration, a start time and an end time of the mobile terminal rotating in the first rotation direction with the x-axis as the rotation axis; and when a sum of absolute values of the first acceleration and the second acceleration within a preset time period after the mobile terminal starts rotating is greater than a fifth preset threshold, a difference between the start time and the end time falls into a preset threshold range, the rotation angle of the mobile terminal in the first rotation direction with the x-axis as the rotation axis is greater than or equal to the first trigger threshold, and the distance between the mobile terminal and the user is smaller than the preset distance threshold, activating the voice recognition function and receiving a speech to be recognized. receiving a trigger instruction of an input interface, and activating the input interface; acquiring a rotation angle of the mobile terminal in a first rotation direction with an x-axis as a rotation axis, when a bottom end of the mobile terminal is tilted up and moved towards a user while a top end of the mobile terminal moves downward, wherein the x-axis is a widthwise direction of a screen of the mobile terminal; and acquiring an acceleration of the mobile terminal, wherein the acceleration comprises a first acceleration of the mobile terminal in a direction along a y-axis and a second acceleration of the mobile terminal in a direction along a z-axis, and the y-axis is a longitudinal direction of the screen of the mobile terminal, and the z-axis is perpendicular to the screen of the mobile terminal; determining, according to the first acceleration and the second acceleration, a start time and an end time of the mobile terminal rotating in the first rotation direction with the x-axis as the rotation axis; and when a sum of absolute values of the first acceleration and the second acceleration within a preset time period after the mobile terminal starts rotating is greater than a fifth preset threshold, a difference between the start time and the end time falls into a preset threshold range, the rotation angle of the mobile terminal in the first rotation direction with the x-axis as the rotation axis is greater than or equal to the first trigger threshold, and the distance between the mobile terminal and the user is smaller than the preset distance threshold, activating the voice recognition function and receiving a speech to be recognized.