Abstract: Along with the rapid development of economy, building land is less and less, one of the city development di-rection is to fully employ the mountain land. by analyzing the stratigraphic features, main with a typical in Beijing mountain area near struction method were detailed introduced to This aticle summarized the treatment of complicated foundation in mountain area form and major hazard of foundation, previous engineering experience. Combined the slope engineering of foundation treatment cases, design calculation and conprovide a reference for similar projects meanwhile.