The invention discloses cyanide-free silver electroplating liquid, and belongs to the field of cyanide-free silver electroplating. The cyanide-free silver electroplating liquid is prepared by the following raw materials: 10-60 g/L of silver tetrafluoroborate, 0.1-1.5 g/L of methylpentynol, 0.1-1.2 g/L of 1, 4 butynediol, 10-20 g/L of ammonium acetate, 7-20 g/L of anisaldehyde, and 10-25 g/L of benzoic acid, wherein the pH value of the cyanide-free silver electroplating liquid is 3-7. The cyanide-free silver electroplating liquid contains no cyanide ions, reduces the harm of wastes to the environment and operators, is simple in preparation, and is easy to operate. The stable electroplating liquid can be obtained; the plating layer stress is low; and the bonding force is tighter.