The installation of cable-stayed cable is the key link of cable-stayed bridge construction. Taking the construction of cable-stayed cable of Tongling Yangtze River Bridge of Hefu Railway as an example, the new construction technology of cable-stayed cable of Tongling Yangtze River Bridge is introduced. By using this technology, the problems of difficult construction, easy to fall and serious damage to the cable body in the conventional construction methods are effectively avoided, and the safe, efficient and high quality installation of the steel strand cable is ensured.