Accurate and efficient liquid distribution control and measurement is very important in many application fields such as energy and power, chemical and pharmaceutical, food processing and laboratory. In this study, the virtual scale technology, which was originally used for solid materials, was extended to liquid distribution system through innovative improvement. This paper discusses the applicability and challenges of virtual scale technology in liquid system, and puts forward innovative improvement measures, including adaptive process design, sensor accuracy improvement, information synchronization enhancement and signal processing algorithm optimization. These improvements enable the accurate measurement of multiple feeding points through a set of metering devices at the total feeding port without additional physical metering devices. The improved virtual scale technology not only improves the accuracy and efficiency of measurement, but also reduces the equipment investment and enhances the automation and information level of the system. The purpose of this study is to provide a valuable reference and reference for the field of liquid dispensing and metering.