This standard specifies methods for the determination of cadmium content in tin-lead solder, including flame atomic absorption spectroscopy (AAS) method and Na2EDTA Titrimetric method. Method 1 is suitable for the determination of cadmium content between 0.00005% and 0.0050%, and Method 2 is suitable for cadmium content between 10.00% and 20.00%. This standard is applicable to the chemical analysis of tin-lead solder. It provides the determination technology of arbitration method. It is suitable for the accurate determination of cadmium content under standard conditions. The standard details the reagents, instruments and measurement procedures to ensure the reliability of the analysis results.