Levofloxacin is commonly used in the treatment of general infections, and the following points should be noted in the process of using it: firstly, levofloxacin, if injected too quickly, may lead to sudden hypotension or even shock of the patient, so it is necessary to pay attention to the speed of titration. Secondly, tendon rupture can be seen in common side effects, which often occurs after the end of levofloxacin static, and even some people still have tendon rupture three months after the end of the case should pay attention to do not carry out strenuous exercise, and once there is a tendon rupture should be promptly seek medical attention. Third, among the common side effects there is also levofloxacin-induced dysglycemia, which should be paid special attention to in diabetic patients’ infusion.