In this work the effect of annealing temperature on the tensile, thermal, and dynamic mechanical properties of poly(p-dioxanone) monofilament were investigate. The tensile strength and tensile elongation at beak increased with annealing temperature at a fixed immersion time. At the in-vitro immersion time of 10 weeks, the tensile strength as zero for samples annealed below 6$0^{circ}C$, but for the samples annealed above 7$0^{circ}C$ th tensile strength of 35 MPa was obtained. The hat of fusion increased with annealing temperature. Three endothermic peaks (84$^{circ}C$, 93$^{circ}C$, and 106$^{circ}C$) were observed for the control sample and the sample annealed at 5$0^{circ}C$. The endothermic peak at 93$^{circ}C$ disappeared at annealing temperature of above 6$0^{circ}C$. In the case of the immersion time of longer than 6 weeks, all samples showed a single endothermic peak. The maximum endothermic peak of samples increased with the immersion time at a fixed annealing temperature. The maximum loss modulus at each in-vitro immersion time showed an increasing tendency as the annealing temperature increased.