The goddess Durga, wife of Siva, is one of the most important and impressive goddess of the Hindu pantheon. The goddess is worshipped in her various shapes. Her most popular epithet is Mahisasuramardini, the slayer of Mahisa who is a buffalo demon, and she is represented in pictures as defeating the demon Mahisa. The story of Mahisasuramardini is the most popular and important one regarding Durga. The Devimahatmya is one of the famous scriptures which tell her story. In the Kalika-purana the story of Mahisasuramardini is found in chapters 59 and 60. This study attempts to clarify the particularities of her as defeating the demon Mahisa in the text.