<TEX>$Si_3$</TEX><TEX>$N_4$</TEX> ceramics have been identified as one of the promising structural ceramics. This study has been carried out to investigate of the synthetic behaviors of <TEX>$Si_3$</TEX><TEX>$N_4$</TEX> derived from domestic silica-stone by direct nitriding method. The silicon nitridation reaction has been studied in the temperature range of <TEX>$1300~1550^{\circ}C$</TEX>. Below the <TEX>$1400^{\circ}C$</TEX>, the nitriding rate was measured to be 16%. For the temperatures higher than the <TEX>$1400^{\circ}C$</TEX>, <TEX>$\beta$</TEX>-<TEX>$Si_3$</TEX><TEX>$N_4$</TEX> phase was formed mainly, and the nitriding rate showed above 98%. With the increasing of sample weight of silicon powder, the nitriding rate and <TEX>$\beta$</TEX>-<TEX>$Si_3$</TEX><TEX>$N_4$</TEX> phase increased at <TEX>$1400^{\circ}C$</TEX> for 2 hours. The shape and particle size of<TEX>$ Si_3$</TEX><TEX>$N_4$</TEX> powder synthesized at <TEX>$1400^{\circ}C$</TEX> for 2 hours showed the irregular angular-type and 10 <TEX>$\mu\textrm{m}$</TEX>, respectively.