Bābā afzal is one of the greatest scholars and poets of late 6th century and early 7th. Once most scientists created their works in Arabic, he wrote in Persian on the other hand Persian verse was abundant with labored and complicated words. On those days, Bābā afzal was involved in creating simple and fluent verse. His idiom was neither Arabesque, nor pure and labord. That is his service to Persian language. There are some stylistic features in his idiom including the abundance of Persian words, fine combinations, equivalence for scientific words, explanatory combinations, short expressions, subsequent parts, such as verb, complement, object and etc. Unparalleled combinations as well as charming words and the use of different modern meanings are discussed in his works.