The book of Nahj ul - Balagha from the time of the compilation in about 1000 years ago, have been in the center of attention a reference of many people.After development of the industry of printing during the last century, the prints of this book by the supervision of Shaikh Mohammad Abdu in cairo, and the Nahj ul - Balagha with the comments of Shaikh. Sobhi Saleh, Printed in Beirut received the attention of many interested people.In this essay, the writer, reviews some of the ancient manuscripts of Nahj ul Balagha, and by comparing them with the print of Abdu and Sobhi Saleh, some of the mistake and change of the latter print are shown.