To provide a capacitor device which can restrain higher harmonic which is generated when a high frequency signal is inputted into a variable capacitor.

In the capacitor device, a first variable capacitor C1, and a second variable capacitor C2 and an inductor L2 which are connected in parallel to the capacitor C1, are arranged between an input terminal I and an output terminal O. Phase of the n-th higher harmonic frequency distortion which flows into the first variable capacitor C1 and phase of the n-th higher harmonic frequency distortion which flows into the second variable capacitor C2 and the inductor L2 are inverted, so that the higher harmonic frequency distortions are canceled with each other and corrected.