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目的：研究复方氯化钠注射液中氯化钾含量的测定方法。方法分别采用四苯硼钠重量法和容量法测定复方氯化钠注射液中氯化钾的含量。结果四苯硼钠容量法测得氯化钾含量无显著性差异，符合分析准确度的要求。结论容量法测定方法迅速，简单快速，方便，适合药品制剂快速测定的要求。“,”Objective: To establish the method for the determination of the content of potassium chloride in compound sodium chloride injection. Methods: The contents of potassium chloride in compound sodium chloride injection were determined by sodium tetraphenylborate volumetric method and sodium tetraphenylborate gravimetric method respectively, the results of which were compared. Results: There was no significant dif erence in the test comparison between the determination results of volumetric method and that of the gravimetric method, and the sodium tetraphenylborate volumetric method meet the accuracy requirements analysis. Conclusion: The sodium tetraphenylborate volumetric method is simple, fast and accurate, which is suitable for the requirements of rapid determination.