This study used gelatin, double aldehyde cellulose (DAC), and conductive polymer PEDOT:PSS as the base materials, and developed a new type of composite conductive bioink in a 20 mL fixed system. The performance was optimized by adjusting the content of PEDOT:PSS (4, 8, 12 mL). Firstly, the inverted small bottle experiment showed that the composite conductive hydrogel was successfully prepared. Then, the influence of PEDOT:PSS on the compressive modulus and electrical properties of the material was systematically studied. The experimental results showed that the compressive modulus of GDPP12 was the highest, reaching 3.3 kPa; GDPP8 was second, at 2.6 kPa; and GDPP4 was the lowest, only 1.6 kPa. The small bulb experiment verified its conductivity: GDPP12 could increase the brightness of the bulb in the circuit, while GDPP4 only maintained weak luminescence. The 3D printing test showed that the grid structure printed with GDPP12 had the best shape fidelity (The area is nearly 100% and the height is above 80%). The personalized printed pictures proved that the composite conductive hydrogel can precisely reproduce complex structures. This study provides a new strategy for developing intelligent wound dressings with both mechanical adaptability and electrical activity.