Retractable cell phone spring antenna

A retractable cell phone spring antenna is characterized by comprising a retractable spring, a spring holding hook, an antenna stand, a feed line and a trigger circuit, wherein the retractable spring is disposed inside the antenna stand, the spring holding hook is fixed to the top end of the retractable spring, the antenna stand is disposed to one side of the top end of a cell phone, the feed line is connected with the retractable spring and a cell phone antenna, the trigger circuit is connected with a cell phone receiving circuit, and a trigger switch of the trigger circuit is an electromagnet. The retractable cell phone spring antenna is low in cost and simple in structure, is convenient to operate, and is not liable to be damaged. Moreover, signals of the cell phone antenna are greatly boosted, harm of radiation of a cell phone to human bodies is minimized, and the power consumption and wearing of the cell phone is reduced.