Recent world wars and local conflicts have shown that drone swarm operations bring unprecedented threats to position-based air defense， which is profoundly changing modern information warfare and will become an important component in the future battlefield. In view of the unprecedented threats brought by drone swarm operations to the core position air defense， this paper analyzed the typical styles and weaknesses of drone swarm operations. On this basis， with the cyber-electronic countermeasure forces as the starting point， the typical scenarios for anti-drone swarm operations and the composition of the cyber-electronic countermeasure forces were presented. According to the “detectable， disruptive， and defendable” overall strategy， the operational processes and typical application methods of cyber-electronic countermeasure forces in anti-drone swarm operations were analyzed. The research results can provide theoretical guidance and technical support for position air defense against anti-drone swarm operations.