A power adapter control method, comprising: determining that a touch panel, TP, is in a working state; obtaining a scanning frequency of a touch panel, TP, by reading the scanning frequency of the TP from a control integrated chip, control IC, of the TP wherein the scanning frequency of the TP is a frequency at which a control integrated chip, IC, of the TP sends a driving signal when the TP is in a working state; obtaining a strength of common mode noise generated by a power adapter at the scanning frequency of the TP by reading, from the control IC of the TP, the strength of the common mode noise generated by the power adapter at the scanning frequency of the TP: or detecting the strength of the common mode noise generated by the power adapter at the scanning frequency of the TP determining whether the strength of the common mode noise is greater than or equal to a preset threshold; and when the strength of the common mode noise is greater than or equal to the preset threshold, adjusting a working frequency of a control integrated chip, IC, of the power adapter according to the scanning frequency of the TP by sending control information to the control IC, wherein the control information is used to instruct the control IC of the power adapter to adjust the working frequency of the control IC, so that when it is determined that a strength of common mode noise newly generated by the power adapter at the scanning frequency of the TP is less than the preset threshold and thus the common mode noise generated by the power adapter does not interfere with the TP, characterized in that the step of adjusting a working frequency comprises adjusting a resistance value of a resistor and/or a capacitance value of a capacitor included in an oscillation circuit of a control circuit of the control IC. determining that a touch panel, TP, is in a working state; obtaining a scanning frequency of a touch panel, TP, by reading the scanning frequency of the TP from a control integrated chip, control IC, of the TP wherein the scanning frequency of the TP is a frequency at which a control integrated chip, IC, of the TP sends a driving signal when the TP is in a working state; obtaining a strength of common mode noise generated by a power adapter at the scanning frequency of the TP by reading, from the control IC of the TP, the strength of the common mode noise generated by the power adapter at the scanning frequency of the TP: or detecting the strength of the common mode noise generated by the power adapter at the scanning frequency of the TP determining whether the strength of the common mode noise is greater than or equal to a preset threshold; and when the strength of the common mode noise is greater than or equal to the preset threshold, adjusting a working frequency of a control integrated chip, IC, of the power adapter according to the scanning frequency of the TP by sending control information to the control IC, wherein the control information is used to instruct the control IC of the power adapter to adjust the working frequency of the control IC, so that when it is determined that a strength of common mode noise newly generated by the power adapter at the scanning frequency of the TP is less than the preset threshold and thus the common mode noise generated by the power adapter does not interfere with the TP, characterized in that the step of adjusting a working frequency comprises adjusting a resistance value of a resistor and/or a capacitance value of a capacitor included in an oscillation circuit of a control circuit of the control IC.