The book of Anhar al-Asrar is one of the books written in the description of Bostan Saadi by Alimullah Balkhi in the 12th century.This book contains useful information about mystic pointsThere are several manuscripts of this work that have not been matched, verified and corrected so far. Therefore, it is necessary to present a corrected version along with lists and notes about the content of the book. The purpose of this research is to introduce the book of Ahar al-Asrar, its author, and some of the existing versions of this work, and based on this, some of its literary features have been examined and the necessity of correcting this book has been discussed. Therefore, among the available versions of this work, the version available in Maulana Azad Aligarh University can be the preferred version. Based on this, this research shows that the description of Saadi's Bostan is based on a mystical perspective, which, considering topics such as mysticism, the words of the text have many complexities in terms of understanding and meaning. Also, in spite of the use of simple and sentient prose, the use of sophisticated prose as well as technical prose, as a result of the presence of literary arrays and a lot of Arabicism, has made it somewhat difficult to understand the meaning of this work.