Ultra-cold Fermi gases with tunable interactions have been widely used to investigate the BEC-BCS crossover in the last decade. Dynamics and thermalization in strongly interacting atomic Fermi gases was proposed to study excitations and pairing in superconductivity. In this talk, I will show our experiments in exploring non-equilibrium dynamics in strongly interacting Fermi gas of 6Li atoms. With a periodic modulation of the order parameter, the amplitude mode with frequency around 2 ∆ /h was observed. With interaction quenches around unitary limit, dynamics and thermalization beyond collisionless BCS theory were found.