Legionella infection mainly infects the human respiratory system, and bronchitis and pneumonia can occur. Legionella is an aerobic Gram-negative bacterium, and clinically it is mainly found in public facilities, such as the edges of faucets, air conditioning vents, and closed air raid shelters. After inhalation, the human body will become infected and cause inflammation of the respiratory tract, and at this time the human body will have symptoms, such as sore throat, dry mouth, headache, general muscle pain, fatigue and even accompanied by the body temperature continues to rise and does not go down, in the clinic, you can choose to macrolides or quinolones, as well as tetracyclines and other drugs for treatment.