  The Solar Mean Magnetic Field (SMMF) is generally defined as disc-averaged
line-of-sight (LOS) magnetic field on the sun. The role of active regions and
the large-scale magnetic field structures (also called the background) has been
debated over past few decades to understand whether the origin of SMMF is
either due to the active regions or the background. In this paper, we have
investigated the contribution of sunspots, plages, network regions and the
background towards the SMMF using data from the SDO-AIA \& HMI, and found that
83\% of the SMMF is due to the background whereas the remaining 17\% originates
from the active and network regions.
