Detecting anions and lithium salts in electrolytes is an important means to ensure stable electrolyte performance, predict and avoid potential problems, and optimize electrolyte design and formulation. This article uses SHINE CIC-D160 + to detect the content of chloride ions, sulfate ions, and lithium salts in the electrolyte and conducts spiked experiments on each sample. The experimental results showed that the parallel RSD of the samples was 0.3%~1.7%, indicating stable instrument performance and reliable method; The sample spiked recovery rate is 94.9%~105.0%, and the results are reliable