According to various exemplary embodiments, an electronic pen and an electronic device for detecting the same are provided. The electronic pen includes: a pen housing; a substrate assembly mounted inside the pen housing, and comprises a coil and a substrate which configured to generate a resonant frequency by an induced current generated in the coil; and at least one packing member disposed on at least a part of the substrate of the substrate assembly, and includes at least a part thereof overlap an inner surface of the pen housing when the substrate assembly is mounted in the pen housing.