Bostan-o-Siyahat, by Zeynalabedin Shirvani, is one of the most important works of the Qajar era. Despite its many values, this encyclopedic work is not known as it deserves. This study seeks to analyze this work based on a stylistic approach. Therefore, this work has been studied descriptively and analytically on three intellectual, linguistic and literary levels. The findings showed that the dominant intellectual themes in this work include philosophy and mysticism, history and geography, medicine, astronomy, music, religion, and various intellectual and religious, sociological, anthropological, and other issues. From a linguistic point of view, categories such as rhetorical compounds, Hindi words, rare and uncommon words, ellipsis, the use of old form of past progressive tense, etc. are frequently used, and the presence of a variety of puns, riming prose, imaginative metaphors, extended analogies, etc. are the main features of Bostan-o-Siyahat on the literary level.