Abstract: In order to solve the problem of dust pollution in fully mechanized top-coal caving face, this paper takes wangjialing 20106 fully mechanized caving face as the engineering background, the dust characteristics and dust concentration distribution of coal face were analyzed by field measurement method, the control measures based on the dust source tracking system and the combination of static pressure spray and high pressure spray are put forward.It formed an intelligent combined control and efficient dust spray system in fully mechanized top coal caving face, which is composed of a number of targeted dust prevention subsystems,and the working face dust is effectively treated. The application shows that the comprehensive dust removal efficiency of the coal mining machine driver and the operator of support can reach over 90%,the dust concentration in the two entry and return roadways is controlled at about 20 mg/m3, which has a remarkable effect and can effectively alleviate the dust pollution in the working face.