High-purity and high-stability composition containing oxaliplatin and preparation method of composition

The invention discloses a high-purity and high-stability composition containing oxaliplatin. The total amount of impurities in the composition are detected by the method specified by standards on registration of imported drug of oxaliplatin for injection, and the total amount of the impurities is less than 0.5%, which is far above the value specified in the standard. The invention also discloses a method for preparing high-purity oxaliplatin lyophilized powder. The oxaliplatin composition disclosed by the invention is high in quality, high in safety and excellent in stability, and can be used for effectively prolonging the expiration date of a product to four years or more. The preparation method disclosed by the invention is easy for industrialization.