Sharir Kriya is the fundamental subject of Ayurveda.Hence every concept of Sharir Kriya holds a significance. Mana has been given a special place of importance in Ayurveda. It is the mana, which is responsible for making available the knowledge to the self or soul & to direct the karmendriyas for proper action at proper time. Hence by studying the concept of Mana it will be helpful to ayurvedic students to clear ideas regarding Mana. Hence the concept of Mana, its nature, function, characteristics, and types has been elaborated in this article.