With the unprecedented development of battlefield information and intelligent technology, mine-countermeasure (MCM) operation is also developing towards multi-platform cooperative engagement. The role of command and control (C2) system as the nerve center of MCM operation is becoming more and more obvious. Mission planning is an important link of C2 for MCM operation. The goal of establishing tactical mission planning system is to reduce the workload of staff in shore based command center and MCM carrier, and improve the overall efficiency of multi-platform cooperative MCM operation. By analyzing the positioning and function of MCM mission planning, the framework and hierarchical structure of manned/unmanned cooperative mission planning are established, and the key technologies and solutions of cooperative MCM mission planning are put forward, which can effectively promote the development of C2 technology for MCM.