The invention relates to a terminal antenna for reducing a specific absorption rate (SAR) of a data card and a molding method of the terminal antenna. The terminal antenna has an annular antenna structure connected with the data card, wherein the annular antenna structure at least comprises two sections of parallel slot lines; and the current flow directions in the parallel slot lines are opposite. By the annular arrangement, the SAR of a wireless terminal product is reduced, and the aims of realizing the whole bandwidth and reducing the SAR of a preset frequency range by changing the annular wiring form can be fulfilled under the condition that the bandwidth is guaranteed.