Objective: The prescription and the procedure of preparing the levofloxacine hydrochloride injection was studied. Methods: The levofloxacine hydrochloride content of the preparation was determined by ultraviolet-spectrophotometer. The related-material was measured by HPLC. The qualitative analysis and hygienical examination were done too. Results: All this show the procedure of preparation is simple
and the quantitative determination is quick and accurate. Conclusion: The results indicated that the procedure can be used to prepare the levofloxacing hydrochloride injecton as a rule.