The utility model discloses a marking device for highway construction, which comprises a bottom plate and a
material storage box, the top of the bottom plate is fixedly connected with the
material storage box, the top of the
material storage box is provided with a top cover, the front end of the material storage box is fixedly connected with a three-way
pipe, the bottom of the three-way
pipe is connected with a water dropper, and a
piston rod is embedded in the top of the three-way
pipe. According to the marking device for
road construction, the three-way pipe is installed on the front side of the material storage box, the
piston rod is embedded in the top of the three-way pipe, the water dropper is installed at the bottom of the three-way pipe, and due to the fact that an adjustable structure is installed, when the marking device is not used, waste of unnecessary resources can be reduced; when a worker needs to use the marking device, the worker only needs to move the
piston rod upwards, only needs to move a certain distance properly, then can hold the push rod and then carries out marking on a road, so that operation is simple, marking operation can be carried out without the help of a water line kettle, and time and labor are saved.