Run leaching experiments were carried out for study of there gularity of pollutant dissolution and release from coal gangue in Ji-dong high way.Some conclusions were drawn as follows,the main pollutant omponents released from coal gangue are the total hardnes,SO42+,total Fe,TDS,ect.The pH value of leaching liquid is in the range of 7.05～9.11,and there are still small amounts of or minim of Cl-,Mn,Cu and so on;The concentration of pollutants components is decreased with increase of rain fall;The amounts of pollutants released from coal gangue are attenuated in a negative exponential law,moreover,the attenuation law can be applied to predicting the intensity of soil and ground water pollution.It is concluded that using the coal gangue in the highway may pollute the ground water and surface water.