  We give a survey of recent development and applications of the chiral quark
soliton model (also called the Nambu-Jona-Lasinio soliton model) with $N_f$=2
and $N_f$=3 quark flavors for the structure of baryons. The model is an
effective chiral quark model obtained from the instanton liquid model of the
quantum chromodynamics. Mesons appear as quark-antiquark excitations and
baryons arise as non-topological solitons with three valence quarks and a
polarized Dirac sea. In this model, a wide variety of observables of baryons is
considered.
