A blind spot warning and turn signal indication light-emitting device for a vehicle side view mirror includes a mirror seat, a blind spot warning unit and a turn signal indication unit both mounted on the mirror seat. The blind spot warning unit includes a light guiding member having a light incident face aligned with a light emitting diode lamp and provided with a plurality of grooves to diffuse light emitted by the light emitting diode lamp. The turn signal indication unit includes a turn signal light guide having a light incident surface aligned with light emitting elements and provided with a plurality of troughs to diffuse light emitted by the light emitting elements. The turn signal light guide further includes an operating surface having reflective surfaces to reflect the diffused light to uniformly pass outwardly through a mirror of the vehicle side view mirror.