Due to the increase of the loading & unloading line and the owner’s needs of piling up alone，the original conversion way of the loading & unloading line,i.e.the bifurcate chute type can’t meet the needs of the process,so we need to find a more economical and convenient loading & unloading line conversion equipment.Analyzing the characteristics of conversion ways for 5 kinds of belt conveyors’ loading & unloading lines,we carry out a comparative analysis on the 4 ways adapting to large coal terminals,and put forward the way of discharging car which has not been applied to large coal terminals,which is more advantageous comparing with the bifurcate chute type,adjustable belt conveyor head type and transfer belt conveyor type.