TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The filler is sucrose, lactose, microcrystalline cellulose, dextrin, starch, and/or calcium phosphate. The disintegrating agent is the hydroxypropyl methyl cellulose, carboxymethyl starch sodium, cross-linked povidone and/or cross-linked carboxymethyl cellulose.    TECHNOLOGY FOCUS - PHARMACEUTICALS - Preferred Components: The carrier is a diluent, an excipient, water, a filler, a disintegrating agent, an adhesive, a wetting agent, a surfactant, an adsorption carrier, a lubricant, a solubilizer and/or a solvent. The pharmaceutical composition is in the form of tablets, capsules, soft capsules, sprays, gels, gel aerosol, suspension, granules, patches, ointments, pills, powder, emulsion, injection, infusion, freeze-dried injection, liposome injection, targeted drug delivery injection, a suppository, a sustained-release formulation or a controlled release preparation. The tablets or capsules comprise (I), its isomers, prodrugs, salts or solvates and fillers and/or disintegrating agents. The sustained-release formulation comprises (I) as the effective component along with the fillers and/or hydroxypropyl methyl cellulose. The sustained-release formulations or controlled release preparations comprise (I) as the effective component along with the fillers, hydroxypropyl methyl cellulose, ethyl cellulose, polyvinyl alcohol, methyl silicone resin, hydroxypropyl cellulose, polyethylene glycol-600, acrylic resin, methyl acrylate, ethoxy ethyl cellulose, stearic acid, palmitic acid, glycerol ester, sodium tripolyphosphate-chitosan and/or polyethylene glycol 1500. The injection or oral emulsion comprises (I), its isomers, prodrugs, salts or solvates as the effective component along with an oil phase, where the oil phase is soybean oil, polyethylene glycol 400, cottonseed oil, peanut oil, sesame oil, corn oil and/or olive oil. The oil phase further comprises a solubilizer or solvent or an antioxidant. The dosage of the filler and the filler in the sample are 1-90% of the dosage of prescription. ACTIVITY - Antibacterial.    ADMINISTRATION - Administration of the pharmaceutical composition is by oral route, which is a solid preparation or a liquid preparation, where the solid preparation is tablet, capsule, powder or particle and the liquid preparation is aqueous solution, oil suspension, syrup or elixir, or gastrointestinal or non-gastrointestinal route in the form of solution, powder or oil suspension injection (claimed).