Intermediate teaching in Maths was started in 1956 with Prof A.P.Mishra as the only teacher in the Department. Shri P.K.Bhattacharya also joined as Lecturer in Mathematics. Prof.Mehta and Prof. Bhawesh Thakur joined Dr.Bhattacharya , Later Degree level teaching in Mathematics at Deoghar College started in 1962 with Shri Arjun Mishra as its head. Shri Bhushan Shah and Dr. Nil Narayan Dwari joined the Department later. In the year 1971, Shri S.S.Sinha was appointed as a lecturer in the Department. Postgraduate teaching in Mathematics started in 1982.
Presently the Department of Mathematics is being headed by Dr. M.K.Singh. Dr. D.D.Singh is also a distinguished Prof. in this Department. In the year 2013 Dr. Satyendra Narayan Singh, joined from Jamtara College Jamtara as an Assistant Professor making the Department of Mathematics more prominent Department of the college