Cable warning signboard for hard pavement

The invention provides a cable warning signboard for a hard pavement, belongs to the technical field of signboards, and aims to solve the problems that when an existing cable signboard is installed on a hard pavement, time and labor are wasted, a water tank needs to be arranged when tools such as a rhinestone are carried, a vehicle needs to be used for transportation, and the installation efficiency of the cable signboard is greatly reduced. A hard pavement is included; a blind hole is formed in the middle of the upper end face of the hard pavement, and a fixing piece is arranged in the blind hole; and the upper end of the fixing piece is sleeved with a signboard body, and the bottom end face of the signboard body makes contact with the upper surface of the hard pavement. According to the signboard, the existing signboard which is tedious to install is simplified, and the signboard can be conveniently installed during on-site inspection and cable detection by an operator. The whole installation process is tim