Liquid level detection device, sanitary equipment and water dispenser

The invention relates to a liquid level detection device, and sanitary equipment and a water dispenser comprising the liquid level detection device. The liquid level detection device comprises a pair of electrodes which are oppositely arranged on the outer wall of a pipeline to form a to-be-measured capacitor; a reference capacitor which is arranged on a substrate, wherein a reference capacitance value is known; a charging and discharging circuit which is connected with the pair of electrodes, charges and discharges the to-be-measured capacitor, is connected with a reference capacitor, and charges and discharges the reference capacitor; a measuring part which is used for measuring the reference capacitor discharge time of the reference capacitor and the to-be-measured capacitor discharge time of the to-be-measured capacitor corresponding to a to-be-measured liquid level; and a calculation part which is used for calculating a to-be-measured capacitance value of the to-be-measured capacitor on the basis of the