  Height series of Doppler observation at the solar limb (covering 3800 - 8700
km distance above the photosphere) in $H_{\alpha}$ spectral line obtained by
big coronagraph of Abastumani Astrophysical Observatory \citep{khu} show the
periodic spatial distribution of Doppler velocities in spicules. We suggest
that the periodic spatial distribution is caused by propagating kink waves in
spicule. The wave length is found to be $\sim$ 3500 km. Numerical modelling of
kink wave propagation from the photosphere to observed heights gives the wave
length of kink waves at the photosphere to be $\sim$ 1000 km, which indicates
to the granular origin of the waves. The period of waves is estimated to be in
the range of 35-70 s.
