I don't know why but I wrote a story on it and thus my authorial life began." Khan completed a degree in economics and philosophy at Ananda Mohan College. He earned his MA from the Department of Bangla Language and Literature at the University of Dhaka in 1961.
Khan was born on 19 December 1940 in Kishoreganj. He wrote his first story as a student in class three. In his words, "One day a kite pounced on a small tortoise before our eyes.