Stability of the Standard Model (SM) higgs potential at high energy is a long lasting question. This means that at some energy scale (Λ~(SM)_I~ 10~9GeV with m_h= 125.6GeV and m_t= 173.3GeV), SM higgs quartic coupling (λ_h) turns negative. At early universe, the H field fluctuates with amplitude~ H_(inf) during inflation. So for large field inflationary scenario (e.g. chaotic inflation) ( H_(Inf) ~ 10~(14) GeV), this may be dangerous for stability of universe. In this paper we modify the chaotic inflation by introducing an extra SM singlet scalar (apart from the inflation field) such that inflationary predictions are satisfied by current Planck data [2]. At the same time, our aim is to make the Higgs vacuum absolutely stable through the threshold effect as shown in [1].
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