A timing value adjustment method, comprising: enabling an autonomous transmit timing value adjustment mechanism of a terminal for at least one timing advance group, TAG; acquiring, according to the autonomous transmit timing value adjustment mechanism for the at least one TAG, a predicted absolute timing difference of each TAG pair that comprises a first TAG, wherein the predicted absolute timing difference of the TAG pair is, in a case in which it is assumed that an autonomous adjustment operation is performed on a transmit timing value of the first TAG according to an autonomous transmit timing value adjustment mechanism for the first TAG, a difference between transmit timing values of the two TAGs comprised in a TAG pair; and responding to the autonomous transmit timing value adjustment mechanism for the first TAG according to a preset policy and the predicted absolute timing difference of each TAG pair that comprises the first TAG; wherein the responding to the autonomous transmit timing value adjustment mechanism for the first TAG according to a preset policy and the predicted absolute timing difference of each TAG pair that comprises the first TAG comprises: when it is determined that a predicted absolute timing difference of at least one TAG pair that comprises the first TAG is greater than a maximum timing difference reference value, not performing the autonomous adjustment operation on the transmit timing value of the first TAG; or in a case in which after the autonomous adjustment operation is performed on the transmit timing value of the first TAG, a difference between transmit timing values of the two TAGs comprised in each TAG pair that comprises the first TAG is less than or equal to the maximum timing difference reference value, performing the autonomous adjustment operation on the transmit timing value of the first TAG. enabling an autonomous transmit timing value adjustment mechanism of a terminal for at least one timing advance group, TAG; acquiring, according to the autonomous transmit timing value adjustment mechanism for the at least one TAG, a predicted absolute timing difference of each TAG pair that comprises a first TAG, wherein the predicted absolute timing difference of the TAG pair is, in a case in which it is assumed that an autonomous adjustment operation is performed on a transmit timing value of the first TAG according to an autonomous transmit timing value adjustment mechanism for the first TAG, a difference between transmit timing values of the two TAGs comprised in a TAG pair; and responding to the autonomous transmit timing value adjustment mechanism for the first TAG according to a preset policy and the predicted absolute timing difference of each TAG pair that comprises the first TAG; wherein the responding to the autonomous transmit timing value adjustment mechanism for the first TAG according to a preset policy and the predicted absolute timing difference of each TAG pair that comprises the first TAG comprises: when it is determined that a predicted absolute timing difference of at least one TAG pair that comprises the first TAG is greater than a maximum timing difference reference value, not performing the autonomous adjustment operation on the transmit timing value of the first TAG; or in a case in which after the autonomous adjustment operation is performed on the transmit timing value of the first TAG, a difference between transmit timing values of the two TAGs comprised in each TAG pair that comprises the first TAG is less than or equal to the maximum timing difference reference value, performing the autonomous adjustment operation on the transmit timing value of the first TAG. when it is determined that a predicted absolute timing difference of at least one TAG pair that comprises the first TAG is greater than a maximum timing difference reference value, not performing the autonomous adjustment operation on the transmit timing value of the first TAG; or in a case in which after the autonomous adjustment operation is performed on the transmit timing value of the first TAG, a difference between transmit timing values of the two TAGs comprised in each TAG pair that comprises the first TAG is less than or equal to the maximum timing difference reference value, performing the autonomous adjustment operation on the transmit timing value of the first TAG.