Conducting polymers, such as PEDOT:PSS, are widely used for stretchable bioelectronics due to its mixed electron/ion conduction, biocompatibility and processability. However, pure conducting polymers can be easily delaminated due to intrinsic difference of surface energy from hydrophobic elastomers, commonly used as substrates or encapsulation layers. Weak and unstable adhesion can cause serious stability issues or noise signal in the operation of bioelectronic devices in a wet environment. Here, we propose a novel surfactant as a universal strategy for covalently anchoring conductive networks on various hydrophobic substrates. This enables direct photo-patterning, high interfacial adhesion strength, and delayed crack formation. As a result, conducting film crosslinked with our surfactant shows excellent stretchability up to 150%. Additionally, it shows high conductivity(~1100 S/cm) by secondary doping effect and long-term stability unlike other typical surfactants.