Abstract: Taking the roadway support under complex surrounding rock at No.3103 working face in Yangying Mine for example，the natural equilibrium arch theory is used to calculate the reasonable support parameters of anchor under complex surrounding rocks:the length of top bolt 2.4 m，the space of top bolt 0.9 m;the length of side bolt 2.2 m，the space of side bolt 0.8 m，and the distance of two rows 1 m.Combining the bolt parameters with the numerical simulation software FLAC3D，simulations on the ordinary bolt，high strength pre-stressed bolt，high strength pre-stressed yielding bolt was carried out.The theory and practice demonstrated that the high strength pre-stressed yielding bolt can effectively support the roadway，reduce the damage range of surrounding rock loose circle，and prevent anchor from excessive load and too early into the state of failure.At the same time，it can reduce the support density of roadway and increase the digging speed.Hence，the high strength pre-stressed yielding bolt owns a good support performance for the roadway with complex surrounding rock.

Key words: Complex surrounding rock, High strength pre-stressed yielding bolt, Support parameter, Numerical simulation, Surrounding rock deformation