A method to construct the finite-band solution to the soliton equation
is presented. We take the Jaulent-Miodek equation as an example. With
the use of the nonlinearization of Lax pair, the Jaulent-Miodek equat
ion is decomposed into two finite-dimensional integrable systems, whos
e properties are studied from the view of an r-matrix. Then through so
lving these finite-dimensional integrable systems, the finite-band sol
ution of the Jaulent-Miodek equation is obtained. (C) 1997 American In
stitute of Physics.