  Precise measurement of the Higgs boson properties are important issues for
the International Linear Collider (ILC) project to understand the particles
mass generation mechanism which strongly related to the coupling with the Higgs
boson. Large Hadron Collider (LHC) experiments exclude the large area of the
predicted Higgs mass region and their results indicate that Higgs boson mass
will be light. Even if LHC discovers the Higgs like particle by the end of
2012, Higgs will be identified by the high precision measurement of the Higgs
boson properties in ILC and also Higgs measurement verifies the correctness of
standard model (SM) or gives some hints toward its beyond. In this study, we
evaluate the measurement accuracies of Higgs branching fraction to the H->bb,
cc and gg at the center-of-mass energy of 250 and 350 GeV.
