At present, the repair of roads and bridges is often accompanied by the appearance of huge dust. The appearance of dust not only affects the process of repairing roads and bridges, but also seriously affects the physical and mental health of construction workers. However, traditional construction site dust suppression equipment is generally expensive, and the dust suppression range is small, and it is not easy to retract and cause equipment damage. The construction site designed by the present utility model uses a dust suppression fog gun to solve the appeal problem.