  We study the one loop electroweak radiative corrections to
  $h^0\to b\bar{b}$ and $h^0\to \tau^+\tau^-$ in the framework of two Higgs
doublet Model (2HDM). We evaluate the deviation of these couplings from their
Standard Model (SM) values. $h^0\to b\bar{b}$ and $h^0\to \tau^+\tau^-$ may
receives large contribution from triple couplings $h^0H^0H^0$, $H^0h^0h^0$,
$h^0A^0A^0$ and $h^0H^+H^-$ which are absent in the Standard Model. It is found
that in 2HDM, these corrections could be significant and may reach more than
20\% for not tow heavy $H^0$ or $A^0$ or $H^\pm$. We also study the ratio of
branching ratios $R=BR(h^0\to b\bar{b})/BR(h^0\to \tau^+\tau^-)$ of Higgs boson
decays which could be used to disentangle SM from other models such as 2HDM.
