Levofloxacin hydrochloride belongs to the quinolone class of antimicrobials, mainly for moderate and severe infections caused by sensitive bacteria, and its adverse reactions are manifested in the following aspects: 1, headache, dizziness, anxiety and even agitation, hallucinations, delusions, these central nervous system adverse reactions; 2, the appearance of burning sensation, numbness, numbness and weakness of peripheral neuropathy; 3, the skeletal muscle system arthralgia, myalgia and These manifestations of muscle weakness; 4, skin itching, hives diagnosis of these skin lesions. Levofloxacin can also cause adverse reactions in the blood system, such as hemolytic anemia or thrombocytopenia, and in the urinary system, such as acute renal insufficiency or even renal failure.