  Besides the loop contribution and the coupling changing, heavy Higgs decaying
to 125GeV Higgs is another important effect in Higgs property measurement in
the models that have extend Higgs sector. Such heavy Higgs decay effect contain
more than one sources, such as $A\rightarrow Zh$, $H\rightarrow hh$,
$A_2\rightarrow A_1h$, and $H_3\rightarrow H_1H_2$. Some of them will be
promising in NMSSM Higgs sector searching. Higgs data fitting is performed with
and without this heavy Higgs decay effect being included, and the final result
demonstrate such effect is very important in Higgs data fitting if the signal
efficiency is large.
