At the beginning of the 1980's, the ongoing reform and open-door policy has been facilitating CIMR's development in mining technology. For the past ten years, large diameter longhole mining method, developed by CIMR, has been widely used across China.Mining technology with back-filling has reached a new level, Singificant breakthrough is made in block caving. New advance has been made in mining sulfides-containg orebodies with spontaneous combustion tendency. All the above-mentioned achievents are summarized in the paper.