The research results on the properties of Cu-P brazing filler metals at home and abroad are reviewed from three aspects: plasticity of Cu-P brazing filler metals,alloying of Cu-P brazing filler metals and their brazed joints,and corrosion resistance of Cu-P brazed joints. The thermoplastic property of Cu-P brazing filler metals,the influence of alloy elements on the microstructure and properties of Cu-P brazing filler metals,dissolution and wetting spreading of Cu-P brazing filler metals to the base metal of brazed joints and their non-corrosion property in different service environment are mainly introduced. However,with the development of copper and copper alloy parts in the direction of integration,functionalization,and miniaturization,there are still the following problems in the development and application of Cu-P brazing filler metals: the lack of research on numerical simulation technology based on the thermoplastic forming of Cu-P brazing filler metals;ignore the research of high-performance Cu-P brazing filler metals;there are few researches on improving the corrosion resistance of Cu-P brazed joints.