Abstract: Aiming at the related problems existing in the rod position processing equipment, based on the experience of the operation and maintenance of nuclear power plants, the rod processing methods were studied and the rod position processing equipment for the control rod in HPR1000 Nuclear Power Plant was developed, with the following characteristics. The advanced programmable logic control system is adopted in the digital platform, enabling the full implementation of logic processing functions. Time-sharing and redundant acquisition methods are adopted to make rod position acquisition more efficient and stable. A combination of dynamic and static fault handling technology is adopted in the rod position misalignment estimation to make rod position processing more consummate.