Born in Baytoo village in Barmer district, Choudhary is the son of former MLA Tagaram Choudhary. He is also Kisaan Morcha's state chief.
An M.A. from Maharshi Dayanand Saraswati University, Kailash is married to Rupa Devi and has two sons.
His leadership skills came to fore when he was in class XII. He gathered around 50 students and accompanied them to meet the then Chief Minister Bhairon Singh Shekhawat in Jaipur, demanding opening of a new college in Balotara in Barmer.
Surprisingly, after 11 days of his meeting with Shekhawat, government passed a proposal for the building of a college, which is now known as Moolchand Bhagwandas Government PG College.