The invention discloses a
tinidazole sodium chloride injection difficult to crystallize at low temperature as well as a preparation method and application of the
tinidazole sodium chloride injection. Belongs to the technical field of pharmaceutical preparations. The preparation method of the
tinidazole sodium chloride injection is adjusted and improved, the tinidazole at a specific nano level is prepared by performing high-pressure homogenization treatment on the tinidazole, and then the tinidazole is dissolved in a specific
solvent to prepare a tinidazole solution. The preparation method comprises the following steps: preparing a tinidazole solution, pretreating the tinidazole solution with a
polyvinyl alcohol modified solution, and finally mixing the tinidazole solution with a sodium chloride solution to prepare the tinidazole
sodium chloride injection, so that the temperature stability of the injection is effectively improved, and the injection is not easy to crystallize at low temperature; according to the invention, the content of tinidazole in the injection is ensured not to be greatly changed, the number of particles is kept at a certain level, the quality of the product is effectively improved, and the safety is improved.