Abstract 2??Amino??4??aryl??5??(1 H??1, 2, 4??triazol??1??yl) thiazole derivatives were synthesized from the reaction of α??bromo substituted acetophenone and thiourea. The structures were confirmed by elemental analysis, 1H NMR and single crystal X??ray diffraction analysis. Biological evaluation showed that some of them possess antifungal and plant growth regulatory activities.