Amoxicillin belongs to the penicillin class of antibiotics and is a semi-synthetic penicillin. Amoxicillin has a broader antibacterial spectrum than penicillin, with enhanced action against gram-negative bacilli. Amoxicillin has strong bactericidal effect and strong ability to penetrate the cell wall. After oral administration, the lactam group in the drug molecule is immediately hydrolyzed to generate peptide bonds, which rapidly combines with the transpeptidase in the bacterium to inactivate it, cutting off the only way for the bacterium to rely on transpeptidase to synthesize glycopeptides for building the cell wall, causing the bacterium to rapidly become a spherical body and rupture and dissolve, and the bacterium eventually dies due to the loss of the cell wall and the continuous penetration of water. It has strong antibacterial and bactericidal effects on most of the pathogenic G+ and G- bacteria (including cocci and bacilli). It has good antibacterial activity against Streptococcus pneumoniae, Streptococcus haemolyticus and other Streptococcus spp, non-penicillinase producing Staphylococcus, Enterococcus faecalis and other aerobic Gram-positive cocci, Escherichia coli, Aspergillus chimaera, Salmonella spp, Haemophilus influenzae, Neisseria gonorrhoeae and other aerobic Gram-negative strains of non-β-lactamase producing bacteria and Helicobacter pylori. Amoxicillin is mainly indicated for various infections caused by sensitive bacteria such as upper and lower respiratory tract infections, urinary tract infections, skin and soft tissue infections and peritonitis and post-surgical infections. It is well tolerated. Adverse reactions commonly include gastrointestinal reactions such as diarrhea, nausea and vomiting, and skin rash. Amoxicillin is available in various dosage forms such as injection, dispersible tablets, capsules and tablets. Compared with ordinary tablets or capsules, amoxicillin dispersible tablets have fast disintegration speed and can be dispersed into a uniform suspension when put into water, which is convenient to take. It is especially suitable for the elderly, children and patients with swallowing disorders. Amoxicillin is a powerful antibacterial drug, but there are also more notes on its use, so such drugs are prescription drugs except for ointment skin topical use, which should be correctly selected with doctor’s prescription after clear infection, and it is not recommended for patients to use it routinely to avoid delaying the disease or causing abuse of antibacterial drugs.