The aim of our work is to synthesize a new epoxy resin octafunctional describing the above characteristics in two steps. In the first step, we synthesized the DGEDDS according to the protocol developed in the laboratory. In the second step, were led to the synthesis of octafunctional resin by condensing the appropriate nucleophilic on DGEDDS. The microscopic structural characterization has been obtained using the Fourier Transform Infrared (FTIR) and Nuclear Magnetic Resonance (NMR) ¹H, ¹³C. the obtained Octafunctional epoxy resin was studied using rheological analysis.