During 2016-2019, Yayasan Bumi Manira-Studio Driyamedia Bandung (the institutions where authors work) involved in cooperation with the dairy coops KPSBU (Koperasi Peternak Sapi Bandung Utara) in Lembang-West Java and KPBS (Koperasi Peternak Bandung Selatan) in Pangalengan-West Java to develop their animal health and extension staff capacities in communication and extension. The staff consist of: para-medics, animal health, extension officers and veterinarians involved in trainings in technical subjects, communication and extension methods to advice farmers in better way. The analysis of this article aims to evaluate and review the communication pattern of those staffs. The capacity building methodology developed is Participatory Learning and Action (PLA) method as trainings of coop staff using “action-reflection-action” learning system. The result of evaluation and review showed that the progress of the project indicate of positive situation because they have potential to be came good officer and very enthusiastic. Most problems of communication and extension in KPBS and KPSBU are similar: using too much one-way communication, less implementation of adult education, and less usage of various learning media. Therefor they need more participatory atmosphere, more adult learning policy, and more flexible management system. The board also can push synergize among sections