The main structure of rock roadway is straight wall and the semicircle arch section, in order to ensure the special rock forming and the heading direction precision, Lunchi orientation method was adopted. In normal roadway driving, Lunchi orientation method was conducted through the center of roadway and the intersection point of the baseline of arch to settle the circle center. But in special rock roadway(bending roadway, large section roadway), due to the large section and variable center line, the normal Lunchi orientation method cannot meet the needs, Chensilou Mine tried a special Lunchi orientation method, which ensured the accuracy of bending roadway and large section chamber construction.