  The intrinsic Baldwin effect is an anti-correlation between the line
equivalent width and the flux of the underlying continuum detected in a single
variable active galactic nucleus (AGN). This effect, in spite of the extensive
research, is still not well understood, and might give us more information
about the physical properties of the line and continuum emission regions in
AGNs. Here we present preliminary results of our investigation of the intrinsic
Baldwin effect of the broad H$\beta$ line in several Narrow-line Seyfert 1
(NLSy 1) galaxies, for which data were taken from the long-term monitoring
campaigns and from the Sloan Digital Sky Survey Reverberation Mapping project.
