The problem of high dust concentration in the coal preparation plant not only worsens the working environment, increases the operating procedures of the workers, and affects the health of the workers, it also brings potential safety threats to the coal preparation plant and causes certain damage to the environment around the coal preparation plant. Pollution. Therefore, studying the dust control system of the coal preparation plant and seeking the key parameters for spraying dust reduction is an important topic that needs to be solved urgently at the mine. It is also one of the important tasks of the coal preparation plant for safe production and improving the spraying of the coal preparation plant.