A terminal device, comprising: a housing, comprising a first conductive side frame, a second conductive side frame and a third conductive side frame, two ends of the first conductive side frame being connected with the second conductive side frame and the third conductive side frame respectively and the second conductive side frame and the third conductive side frame being arranged opposite to each other; a gap, formed in the first conductive side frame; a feed point, positioned between the second conductive side frame and the third conductive side frame, arranged on a bearing plate in the housing and configured to input or output an electric signal; a first signal connection line, connected with the feed point and the first conductive side frame respectively; and a first grounding point, positioned on the second conductive side frame or the third conductive side frame, wherein the first signal connection line, the first conductive side frame between the feed point and the first grounding point, and the conductive side frame where the first grounding point is located are configured to transmit and receive a first wireless signal together, a frequency signal value in the first wireless signal being less than a first frequency threshold value; wherein the first signal connection line and the first conductive side frame between the feed point and the gap are configured to transmit and receive a second wireless signal together, a frequency signal value in the second wireless signal being greater than a second frequency threshold value; characterized in that the terminal device further comprises a tuning component, wherein the tuning component is connected with the first signal connection line; and the first signal connection line is configured to, when the tuning component is connected to the feed point through the first signal connection line, transmit and receive the second wireless signal of a first frequency and, when the tuning component is not connected to the feed point, transmit and receive the second wireless signal of a second frequency, the first frequency being different from the second frequency and both the first frequency and the second frequency being greater than the second frequency threshold value. a housing, comprising a first conductive side frame, a second conductive side frame and a third conductive side frame, two ends of the first conductive side frame being connected with the second conductive side frame and the third conductive side frame respectively and the second conductive side frame and the third conductive side frame being arranged opposite to each other; a gap, formed in the first conductive side frame; a feed point, positioned between the second conductive side frame and the third conductive side frame, arranged on a bearing plate in the housing and configured to input or output an electric signal; a first signal connection line, connected with the feed point and the first conductive side frame respectively; and a first grounding point, positioned on the second conductive side frame or the third conductive side frame, wherein the first signal connection line, the first conductive side frame between the feed point and the first grounding point, and the conductive side frame where the first grounding point is located are configured to transmit and receive a first wireless signal together, a frequency signal value in the first wireless signal being less than a first frequency threshold value; wherein the first signal connection line and the first conductive side frame between the feed point and the gap are configured to transmit and receive a second wireless signal together, a frequency signal value in the second wireless signal being greater than a second frequency threshold value; characterized in that the terminal device further comprises a tuning component, wherein the tuning component is connected with the first signal connection line; and the first signal connection line is configured to, when the tuning component is connected to the feed point through the first signal connection line, transmit and receive the second wireless signal of a first frequency and, when the tuning component is not connected to the feed point, transmit and receive the second wireless signal of a second frequency, the first frequency being different from the second frequency and both the first frequency and the second frequency being greater than the second frequency threshold value.