Lithium carbonate is widely used in modern industry as an important chemical intermediate and target product, as well as a drug for treating  mental disorders. The content of chloride ions and sulfate ions  in lithium carbonate is an important indicator for determining product quality. Relevant national and industrial standards have specific provisions for the  content of chloride  ions  and  sulfate  ions  in  lithium  carbonate  used  in  different  industries.  However, the determination method specified in the Chinese Pharmacopoeia is the chemical semi quantitative method, and the determination method recommended in the battery grade lithium carbonate industry standard is the turbidimetric method, both of which have problems such as cumbersome operation and inaccurate quantification. A standard addition turbidimetric method was used to determine sulfate in lithium carbonate products produced by salt lake method,  improving  the  accuracy  of the turbidimetric  determination.  Ion  chromatography  is  a widely  used  anion detection method, which can accurately, quickly, and sensitively determine chloride and sulfate ions in various water samples, inorganic salt and mineral samples. However, there are a large number of carbonate ions in carbonate samples, and the trailing end of the carbonate chromatograph peak will affect the peak of the sulfate chromatograph peak, Serious interference with sulfate analysis. The online matrix elimination method was used to determine the anion dissociation in lithium carbonate. Although the method is feasible, it takes a long time to determine carbonate and sulfate by only changing the ion chromatography conditions to extend the peak time and increase the resolution between them . This work uses ion chromatography to correct matrix interference without removing the carbonate matrix, while ensuring accurate measurement results and high measurement efficiency.