After elementary and high school in Qom, he started learning Islamic seminary sciences, studied the basics and first levels with prominent professors such as Fazel Lankarani, Seyyed Mahdi Lajevardi, Abutaleb Tajlil Tabrizi,[4] Mohammad Sadegh Nasiri Sarabi, Mohammad Taghi Sotoudeh[5] and Seyyed Ahmad Varamini.

[6] In addition to studying religious sciences, Mar'ashi studied books and treatises of the ancients and the late in these fields due to his great interest in the sciences of rijal, genealogy, bibliography and codicology.

[7] Seyyed Mahmoud Mar'ashi Najafi 's independent works are mainly in the field of cataloging of manuscripts, bibliography and biography of a number of Iranian Muslim thinkers.

In addition, he has corrected 9 works and 64 books have been published under his supervision.

Among his independent works, the following can be mentioned (all in Persian language):[8][9] Dr. Mar'ashi has published the results of his studies in the fields of librarianship, archiving and manuscript research, his experiences and his visits of the cultural centers of different countries in more than 60 articles, conversations and reports in the following publications:[8][9] Some of these articles have also been published in his book Ganjineh Shahab.