The crystallographic properties of the polycrystalline materials $Fe_{1+X}Eu_{1-X}O_{3}$(X = -0.06, 0.0, 0.1, 0.2, 0.3, 0.4) have been studied by the methods of X-ray diffraction and $M"{o}ssbauer$ spectroscopy. The results showed that the samples with the composition range of $0.2{leq}x{leq}0.3$ had the garnet crystal phase, while those with $-0.06{leq}x{leq}0.0$ had the orthoferrite phase. However, with the tendency for the orthoferrite phase to convert into the trigonal phase via garnet phase as increasing the composition x, the orthoferrite-garnet and garnet-trigonal phase coexisted dominantly in the range of 0.0 < x < 0.2 and $0.4{geq}x$, respectively. The analyzed results of $M"{o}ssbauer$ spectrum indicated existence of some vacancies in the d-site of garnet phase, which can be related to the change of intensity in X-ray diffraction patterns.