The invention discloses a
capacitance-type touch control detection circuit for detecting the change in a detected
capacitance, which comprises a
constant voltage source, a first switch, a first
control circuit, a compensating module and an amplifying module, wherein the
constant voltage source is used for charging a detected
capacitor; the first switch is used for controlling the charging time of the detected
capacitor, and the constant-
voltage source, the first switch and the detected
capacitor are connected in series; the first
control circuit is used for controlling the on and
off time of the first switch; the compensating module is used for reducing the electric quantity of the detected capacitor to a preset value; and the amplifying module is used for amplifying the
voltage of the detected capacitor with reduced electric quantity. The invention also provides a detection device and a detection method. According to the invention, after the compensating module reduces the electric quantity of the detected capacitor to the preset value, the amplifying module amplifies the
voltage; the reduction in the electric quantity of the detected capacitor reduces the voltage of the detected capacitor, so that the
capacitance change in the detected capacitor is higher than the capacity change under a condition that the compensating module is not available; and the sensitivity of the detection circuit is increased.