Abstract: The dynamic mechanical properties of shape memory epoxy polymer (SMEP) and 4-harness satin carbon fiber weave reinforced composites were tested by DMA 8000, the glass-transition temperature T_g, the storage modulus E, the tangent of loss angle tan δ were calculated. The experimental results indicate that SMEP and 4-harness satin carbon fiber weave reinforced composites have significant phase transition mechanical behavior, in which E differs beyond one-order around T_g. This prove that the SMEP and 4-harness satin carbon fiber weave reinforced composites have good shape memory capacity. The thermoset SMEP involved with three kinds of carbon fiber weave reinforced composites will lead to T_g and tan δ reduction, but E is significantly enlarged. T_g and tan δ of the same SMEP carbon fiber weave reinforced composites are almost in common, but E differs greatly in its warp direction and weft direction.