【Background】 In China, the oriental fruit moth (OFM), Grapholita molesta (Busck) and the codling moth (CM), Cydia pomonella (L.) often occur in orchards simultaneously. However, the impacts of CM sex pheromone mating disruption dispensers on trapping OFM which infests at the same time have not been observed. 【Method】 In two infested orchards, mating disruption for CM and OFM were performed, while sticky delta traps loaded with both sex pheromones were deployed to observe whether there were trappings and similar "mating disruption" effects of CM sex pheromone onto OFM male adults. 【Result】 The CM sex pheromone traps attracted male OFM adults, irrespective of the type of dispensers. In field trials between 2009 and 2011, CM traps caught as many male OFM as were lured by its own pheromone. Within orchards applied CM and OFM dispensers, lured OFM decreased by the performance of CM dispensers. OFM lured by CM traps mostly reduced by 90.9%, and OFM lured by OFM traps mostly reduced by 92.4%. Within orchards only applied CM dispensers, OFM lured by CM traps mostly reduced by 87.5%, and OFM lured by its own traps mostly reduced by 60.6%. 【Conclusion and significance】 CM pheromone dispensers also have a "mating disruption effect" on OFM. Applying both dispensers within infested orchards could improve the management of both pests.