The invention discloses a remotecontrol multi-purpose power transmission line field warning sign device, which comprises a box body, wherein a P10 unit plate is fixedly arranged at one side of the boxbody, a solar panel is fixedly arranged at the top of the box body, the box body comprises a pressure reducer and storage battery which are arranged on the inner wall of the bottom of the box body; the inner walls of the two sides of the box body are fixedly provided with a control card and a solar charging controller respectively; the other side of the box body is provided with a bracket; the top of the bracket is provided with a sliding hole; a first rectangular hole is formed in the inner wall of one side of the sliding hole, away from the box body, a sliding rod is slidably arranged in the sliding hole, one side of the sliding rod is rotatably provided with an arc-shaped plate, one side of the arc-shaped plate extends to one side of the bracket and is fixedly connected with the otherside of the box body, and one side of the sliding rod is provided with a screw rod. The device has the advantages of high practicability, simple structure and convenient operation, the warning contenton the P10 unit plate can be remotely controlled, and the height and inclined angle of the P10 unit board can be conveniently adjusted, and the device can be conveniently observed bya driver.