The measurement of liquid physical parameters is one of the most frequent measurement operations in many fields, which provides raw data for the analysis and decision-making of scientific research and production. However, most of the existing instruments are contact, manual, single parameter measurement, with low efficiency and the risk of contamination of test samples. Therefore, a non-contact automatic measurement device for liquid physical parameters is designed. The device is mainly controlled by STM32 microprocessor. Based on the principle of flat capacitance, flexible PCB and TI company's fdc2214 capacitance sensor chip are used as the core. The liquid volume measurement is realized by fitting calculation. At the same time, the liquid quality is measured by the resistive film pressure sensing circuit. The experimental results show that the errors of liquid volume and mass measured by the device are 2.31% and 1.07% respectively, which can meet the requirements of liquid measurement in most cases. It provides a new method for automatic liquid measurement in biochemistry and other occasions.