The deep ore body of Songxian Shanjin company is broken,the degree of joint fracture development is high,and the stability of surrounding rock is poor.Because the original upward horizontal approach filling mining method is faced with challenges,such as great mining difficulty,serious mining loss and dilution,support difficulty and high mining cost,this paper carried out experimental research on the mechanized panel downward approach mining method.The mining preparation means is that the transport roadway on the footwall outside the vein is combined with the ramp,the stope is mined from top downwards in approaches and steps with drill jumbo drilling bore holes,which greatly improves mechanization degree of the mine.Production practice shows that the mechanized panel downwards approach mining method saves the cost to mine ores by 6.1 yuan/t compared to upward approach mining method,with good economic profits,higher mechanization degree,high mining efficiency,low mining cost,high safety level,low difficulty to mine broken ore body,and high promotional significance.