The present disclosure relates to a pharmaceutical preparation having varenicline or a pharmaceutically acceptable salt thereof as an active ingredient. More particularly, it relates to an orally administered pharmaceutical preparation which allows limited use of a sweetening agent or a flavoring agent by effectively masking the unique taste of varenicline, particularly bitterness, which is a bitter and burning taste, and ensures convenience in taking the pharmaceutical preparation by being orally administrable without irritation, while containing a pharmaceutically effective amount of varenicline or a pharmaceutically acceptable salt thereof, and a method for preparing the same.