Guava is a rapidly growing commodity. The management of guava farming carried out by the Sari Tani Mandiri farmer group could have been more optimal. Therefore, it has yet to be able to meet the demand for guava. This study intends to examine the correlation between the role of agricultural extension workers and the participation of members of farmer groups in guava farming management. The survey used a qualitative research approach conducted by interview, observation, and documentation. The Non-Probability Sampling technique determines the sample with a saturated sample type. It was then analyzed using Rank Spearman. The results showed a uni-directional and significant relationship with a moderate correlation between the role of agricultural extension workers and the participation of farmer groups in guava farming management. The research showed that the higher the part of agricultural extension workers, the higher the involvement of farmer group members in guava farming management.