Most of models of baryogenesis are incompatible with thermal inflation which is the most compelling solution of cosmological moduli problem. We propose a simple model in which the MSSM plus neutrino mass term (LHu)^2 is supplemented by a minimal flaton sector to drive the thermal inflation. Under two very plausible assumptions, this model leads to thermal inflation followed by Affleck-Dine type leptogenesis along the LHu flat direction. The conservation of generated asymmetry in this model is non-trivial since Hubble parameter is negligible at the time of our Affleck-Dine leptogenesis. We demonstrate numerically that preheating does efficiently damp the amplitude of the Affleck-Dine field and that the lepton number is conserved as the result.