Abstract: The 880 nm LD directly pumping into the emitting level with LD partially en-pumped structure was combined, some experiment was done to study the output characteristic of Nd:GdVO4 laser at 1 342 nm. An of-axis positive confocal unstable resonator was built up, and a 4-bar laser diode stack which central wavelength was 880 nm as pump source was used. 26.3W continuou-wave laser power output was gotten under the pump power of 178 W, and the slope efficiency and optica-t-optical efficiency were 27% and nearly 14.8%, respectively. At the output power of 20 W, beam quality M2 factors were both 1.3 in the unstable direction and stable direction. The result showed that by combining 880 nm LD directly pumping into the emitting level with LD partially en-pumped structure, beam quality has been greatly improved compared with the same output power level en-pumped Nd: GdVO4 laser.