  This study provides a brief overview of low-energy supersymmetry (SUSY) in
light of current experimental constraints, such as collider searches, dark
matter searches, and muon $g-2$ measurements. In addition, we survey a variety
of low energy supersymmetric models: the phenomenological minimal
supersymmetric model (MSSM); the supersymmetric models with cut-off-scale
boundary conditions, i.e., the minimal supergravity (mSUGRA) or the constrained
MSSM (CMSSM), the gauge mediation of SUSY breaking (GMSB), and the anomaly
mediation of SUSY breaking (AMSB), as well as their extensions. The conclusion
is that the low energy SUSY can survive all current experimental constraints
and remains compelling, albeit suffering from a little fine-tuning problem. The
fancy models like mSUGRA, GMSB, and AMSB need to be extended if the muon $g-2$
anomaly comes from new physics.
