An embodiment of the invention provides a method and device for determining
control parameters of a counteracting
branch circuit and a touch control detection device. The method includes inputting first constant signals to the counteracting
branch circuit and inputting first excitation signals to a self-
capacitance detecting
branch circuit, wherein a rear end
processing circuit of the self-
capacitance detecting branch circuit at least performs differential treatment on output signals of the counteracting branch circuit and output signals of the self-
capacitance detecting branch circuit determining phase
delay sum generated when the self-capacitance detecting branch circuit and the rear end
processing circuit of the self-capacitance detecting branch circuit respond to the first excitation signals according to the first output signals; inputting second constant signals to the self-capacitance detecting branch circuit and inputting second excitation signals to the counteracting branch circuit, wherein the rear end
processing circuit of the self-capacitance detecting branch circuit at least perform differential treatment on output signals of the counteracting circuit and output signalsof the self-capacitance detecting branch circuit so as to obtain second output signals; determining phase
delay generated by the rear end processing circuit in response to the second excitation signals according to the second output signals; determining
control parameters of the counteracting branch circuit according to the phase
delay sum and the phase delay generated by the rear end processingcircuit in response to the second excitation signals so as to at least counteract or reduce an original reference value of to-be-detected self capacitance.