The precursor of Eu 3+-doped zinc molybdenum oxide hydrate is synthesized at the room temperature by using the co-precipitation method. The influences of sintering temperature on the microstructure and photoluminescence performance of this precursor are investigated. The research results show that the Eu 3+-doped ZnMoO4 nanostructure can be obtained by sintering the precursor of Eu 3+-doped zinc molybdenum oxide hydrate with a low cost and at about the temperature of 400 ℃.