  Accretion onto black holes is an efficient mechanism in converting the gas
mass-energy into energetic outputs as radiation, wind and jet. Tidal disruption
events, in which stars are tidally torn apart and then accreted onto
supermassive black holes, offer unique opportunities of studying the accretion
physics as well as the wind and jet launching physics across different
accretion regimes. In this review, we systematically describe and discuss the
models that have been developed to study the accretion flows and jets in tidal
disruption events. A good knowledge of these physics is not only needed for
understanding the emissions of the observed events, but also crucial for
probing the general relativistic space-time around black holes and the
demographics of supermassive black holes via tidal disruption events.
