Take levofloxacin allergy breathing difficulty, immediately stop taking levofloxacin, and then take anti-allergy drugs, such as dexamethasone tablets, paracetamol tablets and so on. Patients taking levofloxacin hydrochloride may have an allergic reaction, which is mainly manifested by a possible skin rash and erythema, and in severe cases, it may lead to respiratory difficulties or even anaphylactic shock. Patients eating levofloxacin hydrochloride allergic reaction, first stop using this drug, and then recommended intravenous access, intravenous application of anti-allergic drugs, such as dexamethasone, ipecac, calcium gluconate, life-threatening allergic reactions can be intramuscular or subcutaneous injection of epinephrine. Supportive therapy such as application of vasoactive drugs such as dopamine, dobutamine, and massive rehydration is also required in the presence of anaphylaxis. In conclusion, dyspnea after taking levofloxacin is recommended to go to the hospital in time for anti-allergic treatment as well as resuscitation.