Provided is a therapeutic or prophylactic agent for mood disorders, anxiety, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorders, hypertension, digestive diseases, drug dependence, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune related diseases, depilation, and so on. More specifically, provided is a fused azole derivative represented by general formula (I), which has arginine vasopressin 1b receptor antagonism, or a pharmaceutically acceptable salt thereof.
