Levofloxacin is often not needed for blood sperm that is not caused by an infection, and it is usually needed for about 1 to 2 weeks for blood sperm that is caused by an infection. Hematochezia due to non-infectious causes such as excessive sexual intercourse often does not require the application of levofloxacin medication, and can often be improved simply by improving the frequency of sexual intercourse. However, for those caused by infection, levofloxacin can be applied, such as levofloxacin, and for seminal vesiculitis it usually takes 1 to 2 weeks, and can also be adjusted appropriately according to the condition. It should be noted that for levofloxacin any component of allergy, people under 18 years old can not take levofloxacin, taking levofloxacin may cause nausea, vomiting, dizziness and other adverse reactions, when the appearance of blood sperm, should go to the regular hospital, under the guidance of the doctor for treatment.