The invention provides mass measurement equipment. The mass measurement equipment comprises a container (4), liquid (5), suspended matter (6 and 7), an objective table (8), a first polar plate (10), a second polar plate (11), a third polar plate (12), a controller (21) and a support (25). On the basis of the principle of a flotation balance and the corresponding relation between the mass and the capacitance changing amount, automatic measurement on tiny mass is ingeniously achieved by using a differential capacitor and a Wheatstone bridge. The mass measurement equipment is high in measurement accuracy, low in cost, easy and convenient to operate and high in practicability, and the automatic measurement is easy to achieve. The mass measurement equipment can be widely used in the fields of weighing of tiny particles, safety testing of hazardous chemical substances and food, detection of microorganisms, bacteria or viruses and the like and can also be used as a measurement device for measuring tiny mass in physical experiments at universities.