The invention discloses an identification method for secondary control cables. According to the method, the secondary control cables of a substation are classified according to the differences of the functions of the secondary control cables; different types of cable sheaths are distinguished with colors, and then are installed and laid; cable sheath color identification standards are formed; and cables laid in subsequent reconstruction and expansion of the substation are installed according to the standards, so that the cables can be distinguished through colors, and therefore, workers can be prompted and altered so as to avoid accidental touch of operating loop cables and highly dangerous cables, and the possibility of abnormal operation and personal injury accidents of the substation can be decreased, and the work efficiency of searching, drawing and releasing cables can be improved.