Tamil language has a special place in the history of devotional literature. Saiva Nayanmars and Vaishnava Alwars have created Tamil as the 'language of devotion' due to its wealth which they created by combining scriptures. It is no exaggeration to say that devotional literature is the greatest asset of Tamil society. Karaikalammaiyar, one of the sixty-three Nayanmars, was the originator of Saivite devotional literature. She is the one who gained freedom of soul and salvation and brought pride to the female race. Similarly, Andal was one of the Vaishnava Alwars who lived in the tenth century. She is the only woman among the twelve Alwars celebrated in Vaishnava literature. It is said that life is useless in love, and if you want to reach God, you have to give up love. But the piety of Andal is different from the piety of other Alwars. Andal's hymns gave world a new devotion to womanhood. This review article has been written to highlight the innovation of the devotional tradition of Karaikalammaiyar and Andal in the history of Devotional literature