Abstract: A hydraulic bellow type scale comprises a scale body, a plurality of hydraulic bellows, a variable capacitor, an integrated circuit and a display unit. By means of the pressure in the hydraulic bellow, the weight of an object on a pan of the scale body is transmitted in terms of force for the variable capacitor to translate into a capacitance signal. The capacitance signal is further calculated by the integrated circuit. The weight and price thus calculated are displayed by the display unit.