Abstract: PDLLA-PCL blends were prepared by melt process with poly (D,L-lactic acid) (PDLLA) and poly (ε-caprolactone) (PCL). The mechanical properties, thermal properties, rheological properties and surface morphology of the blends were analyzed and characterized with tensile testing machine, Differential Scanning Calorimetry (DSC), capillary rheometer and atomic force microscopy respectively. Results showed that the flexibility increased, the tensile strength decreased, the melting peak temperature moved to high temperature, melting enthalpy and enthalpy of crystallization increased, the apparent viscosity increased with the increasing of PCL content. The surface flatness of film prepared with PDLLA-PCL blends were better than that of PDLLA. The film prepared by blend with 30% PCL mass fraction was the best.