Abstract: A capacitance detection method and circuit are provided. The detection method includes: performing charging, base capacitance offsetting, and charge transferring successively on a capacitor to be detected in an i-th first offsetting process of the first offsetting processes, to generate a first output voltage, wherein i?N; performing discharging, base capacitance offsetting, and charge transferring on the capacitor to be detected successively in a j-th second offsetting process of the second offsetting processes, to generate a second output voltage, wherein j?M; and determining a capacitance variation of the capacitor to be detected before and after the capacitor to be detected is affected by an external electric field based on the first output voltages corresponding to N first offsetting processes and the second output voltages corresponding to M second offsetting processes in the detection period.