Tungsten-molybdenum alloys are widely utilized in the nuclear industry, aerospace, and various other fields due to their high melting point and strength characteristics. However, poor sinter ability and processability induce manufacturing large-size or complex-shaped parts are difficult. Hence, an in-depth study on the welding technology of tungsten-molybdenum alloys is urgent necessity. The paper provides a detailed introduction to tungsten-molybdenum alloy welding defects and joining process, along with recent advancements in brazing, spark plasma sintering diffusion bonding, electron beam welding, and laser beam welding. It also discusses the latest progress in alloy doping treatment applied to tungsten-molybdenum alloy dissimilar welding, while pointing out existing welding problems. The thesis integrates the weldability of tungsten-molybdenum alloy to analyze and forecast the development prospects of various joining technologies, thereby furnishing a theoretical and practical found.