Nanomaterial-based conductive ink has unique physical and chemical properties, and the conductive filler determines the performance of conductive ink. The composition, classification and characteristics of conductive inks were summarized, and the types and characteristics of nanomaterials were discussed. Compared with other conductive fillers, the silver nanomaterials possess the properties of high conductivity, thermal conductivity, optical properties and high specific surface area, etc. Therefore, silver nanomaterials have become the preferred material for preparing conductive inks. The preparation methods of silver nanomaterials, the corresponding conductive inks and the composition design were further reviewed. The influencing factors on silver nanomaterials-based conductive inks were analyzed through different researches, and the development trend of packaging application was also prospected with suggestions.