An antenna spring structure and an electronic device using the same. The antenna spring structure includes an antenna spring provided with an elastic arm and a protruding portion coupled to the elastic arm, a casing having at least one opening and pivotally coupled to an end of the casing; a cover disposed on the antenna spring and having a first positioning groove and a second positioning groove formed on the protruding portion and disposed with an interval apart, a circuit board disposed inside the casing, and at least one conductive component installed on the circuit board and corresponding to at least one opening, and passed through the at least one opening and exposed from the casing. When the antenna spring is switched from a first position to a second position, the at least one conductive component presses the antenna spring.