Pelvic inflammatory disease is mainly caused by pathogenic infections such as Neisseria gonorrhoeae, Escherichia coli, Staphylococcus aureus, Mycoplasma, Chlamydia, etc. It is better treated with antibiotics such as β-lactam antibiotics, macrolide antibiotics and quinolone antibiotics. 1. β-lactam antibiotics: such as amoxicillin, ceftazidime, etc. The use of β-lactam antibiotics can inhibit cell wall mucopeptide synthetase, thus inhibiting pathogen cell wall synthesis and relieving symptoms; 2. Macrolide antibiotics: such as erythromycin, azithromycin, roxithromycin, etc. Macrolide antibiotics can inhibit pathogen protein synthesis and are commonly used to treat pelvic inflammatory disease caused by mycoplasma and chlamydia infections; 3. Quinolone antibiotics: such as ofloxacin, levofloxacin, ciprofloxacin hydrochloride, etc. Quinolone antibiotics are mainly used to treat pelvic inflammatory disease caused by Staphylococcus aureus infections; 4. Nitroimidazole antibiotics: such as metronidazole, tinidazole, ornidazole, mainly used to treat pelvic inflammatory disease due to anaerobic bacterial infections. To avoid misuse of antibiotics, patients may need to have a drug sensitivity test. Quinolone antibiotics can affect bone development and are usually not suitable for patients under the age of 18. They need to be administered strictly in accordance with medical advice, and self-administration of drugs is strictly prohibited to prevent serious adverse reactions.