  We show the possible stable soliton generation for the dark-state polaritons
(DSPs) in an electromagnetic induced transparency (EIT) medium composed of
$\Lambda$-type atoms. Whether the solitons are dark or bright can be controlled
by the coupling field intensity and the one photon detuning of the probe field.
Besides, the velocity and time width of the solitons also can be adjusted by
the coupling light.
