The 3D imaging of nucleon is at the frontier of understanding the visible Universe and QCD. There are many efforts to access the nucleon’s 3D partonic structure both in the transverse coordinate space (Generalized Parton Distributions) and in the transverse momentum space (Transverse Momentum Dependent distributions). The proposed Solenoidal Large Intensity Device (SoLID) in Hall A at Jefferson Lab will fully utilize the great physics potential of the 12-GeV energy upgrade by combining high luminosities and large acceptance to allow high precision measurements of the observables of interest in a wide kinematic region. We present an overview of the experiment plan and highlight some of the expected physics results.