This paper reports a six-beam subnanosecond high power Nd:glass laser system used for laser plasma research. The characters of each of the six-beam are following: the output aperture is φ60mm, pulse width (FWHM) is 100 ps, output energy is about 10J, energy of super flourescence is less 1mJ, pre-pulse is of the order of μJ, beam divergent angle (H. M.) is 0.5 mrad. Total output power of the six-beam is 0.6TW.