${Alpha}-Fe_2O_3$ was accomplished by chemical method as low temperature as possible and the crystallographic and magnetic properties have been studied by Mossbauer spectroscopy and X-ray diffraction. The sample heated at 15$0^{circ}C$ is found to have a Corundums symmetry with the hexagonal lattice constant a=8.26$pm$0.05$AA$, c=8.75$pm$0.05$AA$. The M$"{o}$ssbauer spectra between the 4.2K and the room temperature show that the ${Alpha}-Fe_2O_3$ crystallized with a single phase and fine sizes. The particle size distribution has the Gaussian distribution center at 98$AA$ and the half width of 32$AA$.TEX>.