This data article provides supporting information to a related research article "Identification of volatile organic compounds for the biocontrol of postharvest litchi fruit pathogen " (Zheng et al., 2019) [1]. The litchi downy blight (LDB) caused by is a major postharvest disease that can severely damage litchi trees and harvested litchi fruit. This data article describes the analysis of volatile compounds (VOCs) in three bacterial biological control agents (BCAs) of LDB ( PP19, PI26, and SI17) via gas chromatography/mass spectrometry (GC-MS). Volatile compounds produced by the three BCAs were captured at five culture time of 24, 36, 48, 60 and 72 h by a solid-phase micro extraction method. The chemical compositions were identified and their retention times as well as relative peak areas were analyzed. Compounds commonly produced at more than one time points were then subjected to (on petri dish) and (litchi fruit and leaves) evaluations for their antagonistic activities against the pathogen