  The extended photometry available for XZ Dra, a Blazhko type RR Lyrae star,
makes it possible to study its long-term behavior. It is shown that its
pulsation period exhibit cyclic, but not strictly regular variations with
approx. 7200 d period. The Blazhko period (approx. 76 d) seems to follow the
observed period changes of the fundamental mode pulsation with dP_B/dP_0=7.7 x
10^4 gradient. Binary model cannot explain this order of period change of the
Blazhko modulation, nevertheless it can be brought into agreement with the O-C
data of the pulsation. The possibility of occurrence of magnetic cycle is
raised.
