The present invention disclosed a transmission line with a foldable bracket, comprising: a first connector (1), a second connector (2), a wire body (3), and a support member (4); wherein the first connector (1) and the second connector (2) are connected through the wire body (3); the support member (4) comprises a connecting portion (5) and a supporting portion (6), the connecting portion (5) is disposed on the first connector (1) and pivoted to the first connector (1) rotatably, wherein the supporting portion (6) can rotate around the pivot. As a result, when an electronic mobile device needs to be propped up, the support member (4) of the transmission line can be opened to form a stable triangle structure between an edge of the electronic mobile device and the support member (4), to prop up the electronic mobile device.