Helicobacter pylori, simply taking levofloxacin usually does not have much effect, the treatment needs to take quadruple therapy. Helicobacter pylori is a kind of bacteria closely related to gastric diseases, the treatment often need a combination of drugs, and levofloxacin belongs to a kind of quinolone drug, although it is an antibiotic drug, for Helicobacter pylori has a certain bacteriostatic effect, but the effect is not comprehensive, and can not be completely sterilized. H. pylori infection often requires quadruple therapy, i.e., a proton pump inhibitor, a bismuth agent and two antibiotic drugs, such as omeprazole, bismuth potassium citrate, amoxicillin and clarithromycin. During the treatment period, you should eat a light diet, avoid spicy and stimulating diet, eat regularly, avoid overeating, and practice meal portioning to avoid cross-infection. Helicobacter pylori infection must be medicated under the guidance of a doctor, avoid self-medication at will.