Test connecting line

The utility model relates to a test connecting line. The test connecting line comprises a test connecting lead and a connecting test plug, wherein the test connecting lead is provided with a plug, an external insulation sleeve and four multi-ply soft copper lines with yellow, green, red and black four-color insulation protection sleeves, the four multi-ply soft copper lines are arranged in the external insulation sleeve, the plug is connected with the four multi-ply soft copper lines, and the connecting test plug is provided with a plug connected with debugging equipment and a socket in matching with the plug arranged on the test connecting lead. According to the test connecting line, the four multi-ply soft copper lines with the insulation protection sleeves are enclosed in the external insulation sleeve, the four multi-ply soft copper lines respectively correspond to red, green, yellow and black according A/B/C/N phase sequences, are intelligible and clear, so winding and insulation destroy do not occur, no