Abstract: In order to improve the efficiency and quality of the conceptual design of shearer and the cooperative design of three machines in fully mechanized mining,cater to the matching process of the internal structure in the shearer and three machines in a fully mechanized mining face,the concept of ecology was introduced into the conceptual design of shearer,and a conceptual design model of shearer based on ecology was constructed. On the basis of the comparison of fully mechanized coal face and ecological similarity,the ecological model of fully mechanized coal face and the individ- ual biological model of shearer were proposed. The parameter coupling relationship between multi-species of shearer and scraper conveyor and hydraulic support was studied,and the coordination relationship among the parts of shearer was also studied. The functional components and the overall parameters of shearer were solved separately. Dominant functional genes selected through the competition of homogeneous populations and the cooperation of heterogeneous populations. According to the coupling relation of three machines,the parameter genes were solved by combining for- mula calculation and model reasoning. On the basis of above theoretical research,a multi group cooperative conceptual design system of coal mining machine had been developed based on Web platform with friendly interactive interface,and the application of this method has been realized. Finally,the effectiveness of the method was verified by the exam- ple of a large mining face Shearer.