Tigecycline is generally used clinically for the treatment of complicated intra-abdominal infections due to bacteria, complicated skin and soft tissue infections, community-acquired pneumonia infections, and complicated infections under the age of 8 years that are not amenable to other antibiotics in patients 18 years of age or older. 1. Complicated intra-abdominal infections: generally, symptoms caused by Citrobacter flaudii, Enterobacter cloacae, Escherichia coli, Klebsiella acidophilus, Klebsiella pneumoniae, Enterococcus faecalis, Staphylococcus aureus, Streptococcus aureus family of isthmus, Anaplasma fragilis, Anaplasma polymorphicum, and Anaplasma monocytogenes. These patients can be treated with tigecycline. 2. Complicated skin and soft tissue infections: Complicated skin and soft tissue infections are usually caused by Staphylococcus aureus, Enterococcus, Streptococcus lactis, Escherichia coli, Enterococcus, Streptococcus pyogenes, Streptococcus pyogenes, Streptococcus pyogenes, Streptococcus inguinarius, Pneumococcus pneumoniae, and Streptococcus fragilis. These patients can also be treated with tigecycline. 3. Community-acquired pneumonia infection: Community-acquired pneumonia infection generally refers to symptoms caused by Streptococcus pneumoniae, Haemophilus influenzae, Legionella pneumophila, etc., including concurrent bacteremia can be treated with tigecycline. 4. Complicated infections in persons 8 years of age and older: only in persons with complicated infections that are not responding to other antibiotics. The main contraindications to the use of tigecycline are allergic reactions to the components of the drug, as well as severe renal and hepatic dysfunction. The drug should be injected under the supervision of a doctor, avoiding the use of private medication.