Some people with diarrhea can be treated with levofloxacin. There are many causes of diarrhea, and different drugs are needed to treat different causes. When diarrhea occurs, a routine stool examination can be performed, and once the presence of elevated white blood cells in the stool should be alerted to bacterial infections, which should be treated with antibiotic drugs, such as levofloxacin. Levofloxacin is a quinolone antibiotic with a broad-spectrum antibiotic effect, for the digestive system of Staphylococcus aureus, Salmonella spp, Shigella spp, E. coli have inhibitory effect, for the bacterial infection caused by acute gastroenteritis has a good treatment effect. A part of diarrhea is caused by intestinal cold, overeating and indigestion. The diarrhea of these people is not related to bacterial infection and the use of levofloxacin has no therapeutic effect, instead, the abuse of antibiotics can lead to imbalance of intestinal flora, which has a certain impact on intestinal health. In case of diarrhea you need to use drugs under the guidance of a doctor to avoid the abuse of drugs.