  We apply the covariant derivative expansion method to integrate out the
neutralinos and charginos in the minimal supersymmetric Standard Model. The
results are presented as set of pure bosonic dimension-6 operators in the
Standard Model effective field theory. Nontrivial chirality dependence in
fermionic covariant derivative expansion are discussed carefully. The results
are checked by computing the $h\gamma\gamma$ effective coupling and the
electroweak oblique parameters using the Standard Model effective field theory
with our effective operators and direct loop calculation. In global fitting the
proposed lepton collider constraint projections, special phenomenological
emphasis is paid to the gaugino mass unification scenario ($M_2\simeq2M_1$) and
anomaly mediation scenario ($M_1\simeq3.3M_2$). These results show that the
precision measurement experiments in future lepton colliders will provide a
very useful complementary job in probing the electroweakino sector, in
particular, filling the gap of the soft lepton plus missing $E_T$ channel
search left by the traditional collider, where the neutralino as the lightest
supersymmetric particle is very degenerated with the next-to-lightest
chargino/neutralino.
