The singing of songbirds is learned behavior. It is controlled by networks of discrete nuclei, called the song control system. Sex steroids affect singing behavior through regulating song control system. It was reported that sex steroids, especially androgens, play key roles in maintaining the stability of the birdsong. Androgens through modulating cell proliferation, electrophysiological properties, synaptic and receptors influence song control system. This paper reviews the research progress that androgen effect on singing behavior and neural mechanism in songbirds.