Lipopolysaccharide injection generally refers to human placental lipopolysaccharide injection, which is suitable for people with chronic bronchitis and bronchial asthma. Human Placenta Lipopolysaccharide Injection is an active substance extracted from human placenta tissue after enzymatic hydrolysis, containing nucleic acid and human placenta lipopolysaccharide, which has the effect of enhancing the body’s non-specific immunity against a variety of viruses and bacteria, and can be used for the prevention and treatment of colds, bronchial asthma, chronic bronchitis and other diseases. At present, the adverse reactions and contraindications of this drug have not been clarified, if any uncomfortable symptoms appear after using the drug, it is recommended to go to the hospital. Patients who need to use human placenta lipopolysaccharide injection treatment should be under the guidance of a doctor.