  Light higgsinos below several hundred GeV are favored or required by the
naturalness of low energy supersymmetry. If only higgsinos are light while
other sparticles are sufficiently heavy, we have the so-called light higgsino
scenario. Confronted with the muon $g-2$ data, this scenario is examined in
this work. Since in this scenario the LSP (lightest sparticle) is
higgsino-like, we need to also consider the dark matter constraints. Assuming a
light higgsino mass parameter $\mu$ in the range of 100-400 GeV while gaugino
mass parameters above TeV, we explore the parameter space under the muon $g-2$
data and the dark matter constraints. We find that, to explain the muon $g-2$
anomaly at $2\sigma$, the winos and sleptons are respectively upper bounded by
3 TeV and 800 GeV. In this case, we find that the light higgsino-like dark
matter can sizably scatter with nucleon and thus the allowed parameter space
can be covered almost fully by the future LZ dark matter detection project. We
also perform a Monte Carlo simulation to figure out the potential of HL-LHC to
detect the light sleptons in this scenario. It turns out that compared with the
current LHC limits, the HL-LHC can further cover a part of the parameter space.
