The invention provides novel cyanide-free silver plating electroplating liquid and an electroplating technology. The cyanide-free silver plating electroplating liquid comprises, by mass concentration, 1.5-4 g/L of silver nitrate, 2-50 g/L of potassium carbonate, 2-100 g/L of hydantoin, 0.1-100 g/L of potassium gluconate, 0.1-100 g/L of potassium malate, 0.1-150 g/L of citric acid, 0.1-280 g/L of hydantoin, 0.1-280 g/L of butynediol and 0.001-20 g/L of alkyl sulfonic acid surface active agent. The electroplating technology comprises the steps of pretreatment, washing, activating, washing, beforehand silver plating, silver plating, recycling, washing, adjusting treatment, washing, hot water washing (80 DEG C), washing and silver protective agent treatment. The novel silver plating technology has the main beneficial effects that firstly, the plating liquid is very stable and easy to control, the current efficiency of the plating liquid is high, and the dispersing capability and covering capability are good; secondly, a cyanide-free formula is adopted in the electroplating liquid, potential danger of cyanide is eliminated, and pollution to the environment is greatly reduced; and thirdly, the various properties of a plating layer are not lower than those of cyaniding silver plating, and a functional cyaniding silver plating technology can be thoroughly replaced.