Nanohydroxyapatite reinforced poly(vinylalcohol) gel (nano-HA/PVA gel) composites has beenproposed as an articular cartilage repair biomaterial. In thispaper, nano-HA/PVA gel composites were prepared byin situ synthesis nano-HA particles in PVA solution andaccompanied with freeze/thaw method. The influence ofnano-HA content, PVA concentration, test frequency andfreeze/thaw cycle times on the viscoelastic behavior ofnano-HA/PVA gel composites were evaluated usingdynamic mechanical thermal analysis (DMTA). The resultsshowed that both storage modulus and loss modulus firstlyincreased and then presented decreasing trend with the riseof nano-HA content. Their maximum values were obtainedwhile nano-HA content was 6%. Furthermore, the G0 andG@ of the composites improve with the increase of PVAconcentrations and freeze/thaw cycle times. This effect wasmore distinct at low freeze/thaw cycles. The phase angle(tan d) of the pure PVA gel is larger than that of the nano-HA/PVA composites at the test frequency spectra, but allthe phase angle values of the tested composites were closeto that of nature bone.