A capacitance detection device for detecting a capacitance between an object proximate to a detection electrode (Es) and the detection electrode (Es), the capacitance detection device comprising: a first voltage output circuit configured to output a first alternating current, AC, voltage supplied to a shield electrode (Ea) disposed proximate to the detection electrode (Es); a second voltage output circuit configured to output a second AC voltage, frequency and phase of the second AC voltage being equal to those of the first AC voltage and amplitude of the second AC voltage being less than that of the first AC voltage; and a current output circuit configured to output a drive current (Is) to the detection electrode (Es) so that a voltage difference between a voltage of the detection electrode (Es) and the second AC voltage is reduced, and output a detection signal corresponding to the drive current (Is), wherein the second voltage output circuit is configured to output a voltage obtained by attenuating the first AC voltage as the second AC voltage, wherein the second voltage output circuit includes a first capacitor (Ca) and a second capacitor (Cb) connected in series with respect to the first AC voltage, the second AC voltage is a voltage generated by the first AC voltage in the second capacitor (Cb), a capacitance ratio of the first capacitor (Ca) to the second capacitor (Cb) has a value adjusted so that the driving current (Is) in the absence of the object proximate to the detection electrode (Es) is zero, and the current output circuit includes: an operational amplifier for amplifying a voltage difference between an inverting input terminal connected to the detection electrode (Es) and a non-inverting input terminal to which the second AC voltage is applied, and outputting the amplified result as the detection signal, and a feedback circuit (Zf) provided in a path between an output terminal of the detection signal of the operational amplifier and the inverting input terminal, wherein the capacitance detection device further comprises a subtraction circuit of subtracting, from the detection signal, a reference AC voltage corresponding to an AC voltage output as the detection signal from the operational amplifier in the absence of the object proximate to the detection electrode (Es). a first voltage output circuit configured to output a first alternating current, AC, voltage supplied to a shield electrode (Ea) disposed proximate to the detection electrode (Es); a second voltage output circuit configured to output a second AC voltage, frequency and phase of the second AC voltage being equal to those of the first AC voltage and amplitude of the second AC voltage being less than that of the first AC voltage; and a current output circuit configured to output a drive current (Is) to the detection electrode (Es) so that a voltage difference between a voltage of the detection electrode (Es) and the second AC voltage is reduced, and output a detection signal corresponding to the drive current (Is), wherein the second voltage output circuit is configured to output a voltage obtained by attenuating the first AC voltage as the second AC voltage, wherein the second voltage output circuit includes a first capacitor (Ca) and a second capacitor (Cb) connected in series with respect to the first AC voltage, the second AC voltage is a voltage generated by the first AC voltage in the second capacitor (Cb), a capacitance ratio of the first capacitor (Ca) to the second capacitor (Cb) has a value adjusted so that the driving current (Is) in the absence of the object proximate to the detection electrode (Es) is zero, and the current output circuit includes: an operational amplifier for amplifying a voltage difference between an inverting input terminal connected to the detection electrode (Es) and a non-inverting input terminal to which the second AC voltage is applied, and outputting the amplified result as the detection signal, and a feedback circuit (Zf) provided in a path between an output terminal of the detection signal of the operational amplifier and the inverting input terminal, an operational amplifier for amplifying a voltage difference between an inverting input terminal connected to the detection electrode (Es) and a non-inverting input terminal to which the second AC voltage is applied, and outputting the amplified result as the detection signal, and a feedback circuit (Zf) provided in a path between an output terminal of the detection signal of the operational amplifier and the inverting input terminal, wherein the capacitance detection device further comprises a subtraction circuit of subtracting, from the detection signal, a reference AC voltage corresponding to an AC voltage output as the detection signal from the operational amplifier in the absence of the object proximate to the detection electrode (Es).