Abstarct: Due to pharmaceutical and biological activities of 1,2,3 triazoles, in this work new derivatives of these compounds lixnked to heterocyclic ring system were prepared using click chemistry. At first step acetylenic compounds of 6-methyl-2- propragyl thio pyrimidine and 2-propargyl benzamidazol were prepared from reaction of related heterocyclic this compounds with propargyl bromide. In continuation, this acetylenic heterocyclic compounds reacted with aromatic azid in the presence of copper(II) acetat and sodium ascorbate in DMF, new derivatives of 2-((1-(Aryl)-1H-1,2,3-triazol-4-yl)methylthio)-1H-benzo[d]imidazole and 6-methyl-2-((5-(Aryl)-5H-pyrazol-3-yl)methylthio)pyrimidin-4(1H)-one were synthesited. The main derivatives of this method is high efficiency, easy sepration of product, using any inert atmosphere and room temperature operating.