The utility model discloses an equipment for installation of bridge concrete guardrail water -drain mast, including bridge railing roll supporting walking device and operation platform, bridge railingroll supporting walking device is including hanging the arm, supporting wheel and drive arrangement, it includes the corresponding inside wall support with the inboard vertical wall of bridge railingto hang the arm, at the upper end of inside wall support fixed connection and the corresponding roof support of bridge railing roof, the other end fixed connection and the corresponding lateral wallsupport of bridge railing outside vertical wall of roof support, at the inside wall support, roof support and lateral wall support are equipped with the supporting wheel respectively towards one sideof bridge railing, drive arrangement is used for driving the supporting wheel so that hang arm along bridge railing walking, lateral wall fixed connection in one side that lateral wall support and supporting wheel were carried on the back mutually with operation platform. The utility model belongs to the professional equipment of bridge concrete guardrail water -drain mast installation, characteristics such as it has, and the cost of manufacture is low, convenient operation, safe in utilization, work efficiency height.