Space measurement ship is a link between heaven and earth, which install a wide range of microwave communications equipment, Electromagnetic environment than the land environment is relatively complex. Shipborne radar equipment is a key component of the space measurement ship, high and low frequency, high and low voltage equipment in the same confined space. Electromagnetic compatibility issues are more prominent. At the beginning of the product design we must strictly consider the electromagnetic compatibility problem, combined with electromagnetic compatibility prediction design method, as far as possible from the source to reduce the interference of subsystems equipment and the risk of interference.From the equipment development to the followup equipment shipment, different solutions are taken for different electromagnetic compatibility problems, so that all devices within the system work coordinately.