Thienylazole compounds (I) and thienotriazolodiazepine compounds (II) of the formulas ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen, halogen, C.sub.1 -C.sub.5 alkyl and the like; --A.dbd.B-- is --N.dbd.N-- and the like; R.sup.3 and R.sup.19 are hydrogen, C.sub.1 -C.sub.5 alkyl and the like; Y is --NHCO--, --NHCONH--, --NHCOO-- and the like; Z.sup.1 and Z.sup.2 are aryl, heteroaryl and the like; Ar is halogen-substituted phenyl and the like; and m is 0 or an integer of 1-5. The compounds of the present invention have CCK antagonistic action and gastrin antagonistic action, particularly potent antagonistic action against CCK-A receptor, and are useful as agents for the prophylaxis and treatment of central and peripheral nervous system diseases (e.g., anxiety, schizophrenia, and the like) and digestive diseases (e.g., pancreatitis, gastric ulcer, enterelcosis, irritable bowel syndrome, constipation, and the like).