A CW frequency-stability ring Nd:YVO-4 laser end-pumped by a laser diode through fiber-coupling is designed and experimentally demonstrated. The output laser frequency is locked at the central frequency of Fabry-Pero confocal reference cavity, the frequency stability was better than 400 kHz. Up to 2 W output power with the frequency-stability better than 620 kHz is achieved at 6 W input power. The conversion efficiency from light to light is 33.3% and the conversion efficiency from electric power to light is 10%.