Reactor neutrinos have played an important role in the neutrino physics, from the discovery of neutrino in 1950s, to the confirmation of neutrino oscillation driven by theta12 in 2000s,
and the first observation of neutrino oscillation driven by theta13 by current reactor neutrino experiments, Daya Bay, Double Chooz, and RENO in 2010s. The next generation experiment, JUNO,
aims to determine the neutrino mass ordering in 2020s. Besides, the discrepancies between the measured and predicted reactor neutrino rate and energy spectrum are improving the understanding
of the nuclear decay data. In this talk, I will give an overview of the reactor neutrino physics and experiments.
