TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first acid is hydrochloric acid, sulfuric acid, or phosphoric acid. The catalyst may be sodium hydroxide or sodium carbonate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (claimed): Compound (I) is prepared by:(A) placing substituted phenylamine in a reactor, adding first acid to obtain acid salt of aromatic amine (in which the molar ratio of phenylamine to first acid is 1:2-4), adding water to dissolve acid salt of aromatic amine, stirring for 0.5 hour, cooling to 0-5 degrees C in ice batch, adding 30 wt.% sodium nitrite solution until potassium iodide starch paper turns blue, and stirring for 0.5-1 hour to prepare transparent substituted phenylamine diazonium solution;(B) dripping obtained solution to sodium azide aqueous solution (3 mmol/ml) at - 10 to 0 degrees C ( in which the molar ratio of sodium azide to aromatic amine is 2:1), stirring at 0-35 degrees C for 0.5-3 hours after dripping process is completed, monitoring the reaction by H-acid filter paper permeability circle test, stopping the reaction when an intersection part of H-acid solution and reaction liquid on the filter paper does not change color, and extracting with first solvent if the product is liquid and decompressing and rotatably steaming organic phase to obtain substituted phenyl azide crude product, or directly filtering if the product is solid and washing inorganic salt with distilled water to obtain substituted phenyl azide crude product;(C) mixing obtained crude product, substituted phenylacetonitrile and catalyst at molar ratio of 1:1-3:1-3, adding second solvent (minimum dosage capable of completely dissolving reactant at room temperature), reacting at 20-78 degrees C for 6-60 hours, monitoring the reaction by thin layer chromatography (TLC) (in which the developing agent comprises ethyl acetate and petroleum ether at volume ratio of 1:1-6 and is added at 0.5 cm of liquid surface height), decompressing and spin-drying solvent after material point of substituted phenyl azide disappears, washing obtained solid, filtering to obtain 1-substituted phenyl-4-substituted phenyl-5-amino-1,2,3-triazole crude product, and purifying crude product by recrystallization in third solvent; and(D) adding purified 1-substituted phenyl-4-substituted phenyl-5-amino-1,2,3-triazole and substituted salicylide at molar ratio of 1:1-6 to a container, adding fourth solvent (minimum dosage capable of completely dissolving reactant at room temperature), regulating pH of solution to 3-6 with second acid, uniformly stirring, heating and refluxing at 40-150 degrees C, monitoring the reaction by TLC, decompressing and spin-drying solvent at after material spot disappears, washing obtained solid with sodium hydroxide aqueous solution (2 mol/ml), filtering, and recrystallizing filter cake in fifth solvent.Preferred Components: The second acid is glacial acetic acid, propionic acid, or isopropionic acid. The first solvent is dichloromethane, carbon tetrachloride, chloroform, ether, acetone, ethane, or halogenated ethane. The second solvent is ethanol, methanol, n-propanol, isopropanol, butanol, chloroform, acetone, benzene, toluene, o-xylene, m-xylene, or p-xylene. The third solvent is ethanol, methanol, n-propanol, isopropanol, butanol, methyl formate, ethyl formate, propyl formate, isopropyl formate, butyl formate, ethyl acetate, ethyl propionate, methyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, benzene, toluene, or xylene. The fourth solvent is ethanol, methanol, n-propanol, isopropanol, butanol, formic acid, glacial acetic acid, propionic acid, isopropionic acid, butyric acid, isobutyric acid, benzene, toluene, o-xylene, m-xylene, or p-xylene. The fifth solvent is ethanol, methanol, n-propanol, isopropanol, butanol, benzene, toluene, o-xylene, m-xylene, or p-xylene. The catalyst is sodium alkoxide, potassium alcoholate, sodium amide, triethylamine, ethanolamine, diethanolamine, tetramethylammonium hydroxide, ethylenediamine, triethanolamine, morpholine, 2-hydroxyethylamine, alkylamine, or triisopropanolamine. ACTIVITY - Antibacterial; Fungicide.    SPECIFIC COMPOUNDS - 24 Compounds (I) are specifically claimed, e.g. 1-phenyl-4-phenyl-5-salicylaldimine-1,2,3-triazole (Ia); 1-(4-chlorophenyl)-4-phenyl-5-salicylaldimine-1,2,3-triazole; 1-(4-bromophenyl)-4-phenyl-5-salicylaldimine-1,2,3-triazole; 1-(4-methylphenyl)-4-phenyl-5-salicylaldimine-1,2,3-triazole; and 1-(4-methoxyphenyl)-4-phenyl-5-salicylaldimine-1,2,3-triazole.