Abstract: Abstract：In order to adapt to mine derrick design,with a coal mine in GanSu drilling derrick instance,proposed the existing derrick method of analysis which use the load combination of current specifications,and to analyze and verify the derrick skip head sheave and cage head sheave vertical arrangement.The results showed that:skip head sheave and cage head sheave vertical arrangement compared to only partial reinforcement can adapt to the requirements of conventional arrangement,and requires less reinforcement material,greatly reducing dependence of the terrain, with more strong applicability.