The plastic disc floor cleaner is an accessory of a high-pressure cleaner, which is specially used for cleaning the floor and is used in conjunction with the high-pressure cleaner. The high-pressure water provided by the high-pressure cleaner is used as the power and water source, and is sprayed onto the floor through the floor cleaner to complete the cleaning of the floor. The floor cleaner is equipped with a rotating center shaft, which is connected to a rotating arm. A nozzle is installed at the end of the rotating arm, and the nozzle has an oblique angle of about 70 degrees with the ground. In this way, when the high-pressure water flow is flushed to the ground, the ground forms a reverse thrust to the high-pressure water flow, which pushes the rotating arm to rotate at a high speed. Therefore, when a person pushes the floor cleaner to clean the ground, the high-pressure water flow coming out of the nozzle flushes the ground while rotating at a high speed, which greatly improves the cleaning efficiency and makes the cleaned ground very clean. At present, this product has been widely used in road surfaces, community floors, public places and other occasions for floor cleaning, and is a very popular product. The plastic disc has strong corrosion resistance, light texture, and is relatively more economical and practical.