  Fast radio bursts are a class of transient radio sources that are thought to
originate from extragalactic sources since their dispersion measure greatly
exceeds the highest dispersion measure that the Milky Way interstellar medium
can provide. Host Galaxies of twenty-two fast radio bursts have already been
identified. In this paper, the dispersion measurement of these fast radio
bursts produced by the Milky Way interstellar medium, and the intergalactic
medium is obtained through known physical models to yield the host galaxy
dispersion measure. It is observed that the host galaxy dispersion measure
increases with its redshift value. We also obtained that the host galaxy
dispersion measure has different distribution between repeaters and
non-repeaters. It is noted that the reason for the divergence of the host
galaxy dispersion measures should be accounted for by the difference in their
local environment.
