  Evaluation of the reactor $\bar{\nu}_e$ flux and spectrum is an essential
ingredient of their application in the neutrino oscillation studies. Two
anomalies, i.e. discrepancies between the observed and expected count rates,
are widely discussed at the resent time. The total rate is $\sim$ 6\% lower
than the expectation at all distances $>$ 10 m from the reactor. And there is a
shoulder (often referred to as "bump") at neutrino energies 5-7 MeV, not
predicted in the calculated spectrum. I review the ways the flux and spectrum
is evaluated and concentrate on the error budget. I argue that far reaching
conclusions based on these anomalies should await a thorough understanding of
the uncertainties of the spectrum, and point out possible standard physics
sources of the anomalies.

High Energy Physics - Phenomenology;Nuclear Theory