Coffee Berry Borer (Hypothenemus hampei Ferr.) is one of the most severe pests, causing up to 80% yield losses in coffee. It mainly attacks arabica coffee varieties in Indonesia because they are cultivated more widely than robust. As a result, H. hampei spread throughout Indonesia and became an endemic pest. Population monitoring techniques to reduce pest invasion spread and attack are among the pest management approaches. The study was carried out to forecast attacks during the harvest season by monitoring the population of H. hampei in the Enrekang district, which had not been done earlier. The study was conducted in Enrekang Regency using the weekly observation technique and identifying the sample plants that used a line transect. Approximately 30 trees were sampled along transects every 4 meters. The study indicates that pest monitoring technology could determine attack levels in post-peak cropping conditions (high season), with the highest attack intensity of 6.14% at the beginning of the observation and the lowest at 0.54% at the end. CBB pests attack based on fruit color, with unripe green fruit getting its most attention compared to red, with a total of 209 green fruits attacked out of 264 fruits. H. hampei will begin its first attack on young fruit whose endosperm has hardened and dark green fruit (stage 3 fruit development) aged one month, which is the most sensitive. The soft tissue of the dark green fruits supports the movement of CBB larvae. Direct monitoring on infection rates will improve decision-making for control measures to reduce population and spread. The crop attack rate will be decreased with monitoring techniques and management systems.