The seven classifications of antibiotics include: i. β-lactam antibiotics: including penicillins, cephalosporins, other β-lactams, β-lactamase inhibitors and their compound preparations. Second, macrolide antibiotics: also known as erythromycin antibiotics, including erythromycin, roxithromycin, azithromycin, clarithromycin, etc. Aminoglycoside antibiotics: streptomycin, gentamicin, etimesine, etc. Four, tetracycline antibiotics: tetracycline, oxytetracycline, doxycycline, etc. V. Lincomycin antibiotics: Lincomycin and clindamycin. Sixth, chloramphenicol antibiotics: chloramphenicol and thiamphenicol. Seven, peptide antibiotics: including vancomycin class such as vancomycin, desmethyl vancomycin, etc., polymyxin class such as polymyxin B, bacillus peptide class of bacillus peptide, etc. Sulfonamides and quinolones such as haloperidol, levofloxacin, etc. are not antibiotics.