Anna means food and poorna means full, complete and perfect. Mother Annapoorna has full authority on food and grains by the grace of mother Annapoorna no one can become poor and bankrupt. She is the symbol of one who grants nourishment on every level even once Lord Shiva had to come to beg alms to her for the attainment of perfection is wisdom and renunciation. For knowledge and strong sacrificing qualities  

This Yagna is performed to have all types of prosperity, happiness in family and for abundance of food and grains.