Bana came to international attention with her tweets giving a tragic account of the bombardment of Aleppo by the Syrian regime and its allies.
Bana, who was evacuated from the besieged city to Turkey in December, announced last Wednesday that she would be writing "Dear World" about her harrowing experience during the war.
"I am happy to announce my book will be published by Simon & Schuster. The world must end all the wars now in every part of the world," Bana's account, which is run by her mother Fatemah, tweeted.
Her memoir will also focus on her new life in Turkey and how her family is rebuilding their lives outside of Syria.
"I am so happy to have this opportunity to tell my story and the story of what has happened in Aleppo to the world," Bana said in a statement released by her publisher.
"I hope my book will make the world do something for the children and people of Syria and bring peace to children all over the world who are living in war," she added.
The book will be published in autumn by international publisher Simon & Schuster and a young reader’s edition by Salaam Reads will follow shortly after it will also be made available as an audiobook.
Bana told The New Arab in December that she would one day return to her hometown of Aleppo.
"I'll keep on tweeting to teach the world about what we went through and how we had our homes bombed, felt hungry and cold before we were forced to leave," she said.
"I will go back to my city Aleppo when the bombing stops and I will study English so I can continue to spread the message of our suffering," she added.
Assad loyalists and online trolls have slammed the young girl and her mother's messages as propaganda with some even alleging the Twitter account was fake.
In January, US actress Lindsay Lohan met Bana along with Turkish President Recep Tayyip Erdogan in Ankara.