Abstract: To search for new negative thermal expansion （NTE） materials with the similar structure of Sc₂W₃O₁₂,GdY（WO₄）₃,Gd₂（MoO₄）₃, DyGd（MoO₄）₃ and DyTb（MoO₄）₃ compounds were synthesized by the standard solid state reaction technique. The variation of cell parameters of these compounds with temperature was measured by powder X-ray diffraction.Unfortunately, it is found that these four kinds of compounds exhibit normal positive thermal expansion in the measured temperature range. The structure analysis indicates that the GdY（WO₄）₃ is monoclinic CaWO₄ （scheelite） type structure, while the Gd₂（MoO₄）₃, DyGd（MoO₄）₃, DyTb（MoO₄）₃ compounds are orthorhombic α-Gd₂（MoO₄）₃ type. Both types of structure are relative denser compared with that of negative thermal expansion material Sc₂（WO₄）₃. Moreover, the coordination of some oxygen atoms is three in the CaWO₄（scheelite） type and the α-Gd₂（MoO₄）₃ structures. Therefore, the structures can not meet requirements for thermal contraction that the structure is an open, low-density framework and the coordination of oxygen is twofold. So it is impossible to show negative thermal expansion in these compounds.