  The Belle II experiment at the SuperKEKB collider is an upgrade of the Belle
/ KEKB experiment. It will start physics data taking from 2018 and with $40$
times luminosity, its goal is to accumulate 50 $ab^{-1}$ of $e^+e^-$ collision
data. The physics programs have a wide range of areas for new physics, such as
more constraints on CKM Unitarity Triangle, searching for charged Higgs, direct
CPV, Lepton Flavour Violation and dark matter.In this monograph, we will review
the current status of Belle II and SuperKEKB construction and introduce the
main physics opportunities at this facility.
