A conductive element and a lamp using the same are described. The conductive element includes a sleeve portion and a conductive portion, and the conductive element is applied to a lamp reflector. The lamp reflector has a main body and a neck portion connected to each other. The sleeve portion of the conductive element is installed in the neck portion, and then a discharge lamp tube through from the main body to the sleeve portion in the neck portion, and the conductive portion forms an included angle with the discharge lamp tube. Therefore, a length achieved after the discharge lamp tube and the lamp reflector are assembled together is shortened.