As the pumping source of lasers, 980 nm high-power laser diodes are of great importance. However, these laser diodes have some shortcomings, such as broad spectral width and low beam quality which lower the pumping efficiency and affect the stability of laser diodes. In order to improve the pumping efficiency of high-power semiconductor laser, the linewidth should be narrowed and the beam quality should be increased. The 980 nm highpower distributed-feedback laser (DFB) is studied by fabricating a first order grating into the laser to realize the narrow linewidth, wavelength stability output and optimizing the condition of the ridge waveguide to get the fundamental mode output. The fabricated laser diode with 1000 μm cavity length has a threshold current of 6 mA, slope efficiency of 0.71 W/A, maximum stable output of 130 mW. The thermal drift coefficient of wavelength on this DFB laser is 0.064 nm/K. When measuring the far-field divergence angle, fast axis divergence angle is 34° and slow axis divergence angle is 6.3°.