Abstract: Halloysite nanotubes (HNTs)/Polyvinyl alcohol (PVA)-Starch composite films were prepared by solution casting method. And the structure and properties of HNTs/PVA-Starch composite films were investigated. The results show that with the increase of HNTs content, the mechanical properties, thermal stability, water resistance and ultraviolet-shielding property of HNTs/PVA-Starch composite membranes are improved. When the mass ratio of HNTs to PVA-Starch is 10%, the mechanical properties the composites are the best and the tensile strength increases by 22%. The morphological observations suggest that HNTs can be uniformly dispersed with a single tubular distribution and have good interfacial bonding in the HNTs/PVA-Starch composites. Dynamic mechanical analysis (DMA) shows that the addition of HNTs has little effect on the glass transition temperature of the HNTs/PVA-Starch composite film, while the storage modulus of the composite film increases and the mechanical loss decreases. The light transmittance test result shows that HNTs have little effect on the transparency of the HNTs/PVA-Starch composite film, while in the UV region (200-400 nm), the transmittance decreases with the increase of the amount of HNTs.