The non-contact original-state online real-time monitoring of complex liquids is very important in green industrial processes in many industries—including the petrochemical industry, nonferrous metal industry, and food industry—as well as in environmental engineering. For a long time analyzing complex liquids requires time-demanding and chemical-consuming pretreatments that make online real-time monitoring and control impossible. The advent of the first non-contact original-state online real-time monitoring equipment for complex liquids betokens the coming of time of a new generation of monitoring methods and equipment. This innovation breaks through the restrictions of traditional analytical theories and, without any pretreatment, is capable of detecting target substance concentration in solutions with high concentration, high salinity, strong coating, multi-ion states, and multi-phase coexistence. Its benefits include product quality improvement, time and cost savings, and pollutant reduction.