Dynamic thermomechanical analysis(DMA) was used to study the dynamic viscoelastic properties of non water reacted polymer materials. The moulds for DMA tests of non water reacted polymer materials were designed and prepared. The important problems for accurately testing viscoelastic properties of non water reacted polymer materials were solved. Then frequency and temperature spectra of non water reacted polymer materials were analyzed and the changing rules of the variation of frequency and density for dynamic viscoelastic properties were studied. Also high and low temperature properties and engineering applicability of polymer materials were researched. Meanwhile the difference of dynamic viscoelastic properties with water or without water was contrasted, the functional relations of storage modulus and loss factor with density and frequency were also obtained. The results show that non water reacted polymer material is an engineering material with good thermal conservation and cold resistant abilities. The viscoelasticity of the material is greatly affected by the frequency(greater than 20 Hz) without water, and in water environment is greatly affected by density, which should arouse adequate attention in engineering application.