The following are common causes of hand pain during sodium ornidazole chloride IV: a. Ornidazole sodium chloride is an anti-inflammatory drug, and allergic reactions may occur during infusion in patients of different constitutions. At this time, the patient may experience hand pain and it is recommended to stop the infusion. Inject 25mg of fenagan intramuscularly and closely observe the patient’s vital signs to avoid serious complications such as anaphylaxis. Second, Ornidazole sodium chloride is irritating to blood vessels, and too fast an infusion will cause spasmodic constriction of blood vessels, resulting in painful symptoms in the patient’s hands. At this time, by slowing down the infusion rate or hand topical 50% magnesium sulfate to reduce the pain caused by vascular spasm. Third, the patient has infusion extravasation, when the infusion site appears obvious bulging, the infusion of liquid into the tissue interstices, causing swelling and discomfort. Patients are advised to change the infusion site, and local topical application of Jinhuang San ointment can reduce swelling and pain.