  The measurement for charge distributions of fragments in 252Cf has been
performed by using a unique style of detector setup consisting of a typical
grid ionization chamber and a dE-E particle telescope. We found that the
fragment mass dependency of the average width of the charge distribution shows
a systematic decreased trend with the obvious odd-even effect. The variation of
widths of charge distribution with kinetic energies shows an approximate
V-shape curve due to the large number of neutron emission for the high
excitation energies and cold fragmentation with low excitation energies. As for
the behavior of the average nuclear charge with respect to its deviation
{\Delta}Z from the unchanged charge distribution (UCD) as a function of the
mass number of primary fragments A*, for asymmetric fission products {\Delta}Z
is negative value, while upon approaching mass symmetry {\Delta}Z turns
positive. Concerning the energy dependence of the most probable charge for
given primary mass number A*, the obvious increasing tendencies for with the
kinetic energies are observed. The correlation between the average nuclear
charge and the primary mass number is given as linear function. The proton and
neutron odd-even effects with light fragment kinetic energies are derived.
