The experiment aimed to explore the genetic variation at traits of sugar and acid components in F₁ generation of the jujube hybrid， which might offer further support for selecting the parents and quality germplasm selection in breeding. The contents of sugar and acid components in fruit of the 140 hybrid plants of JMS2 × Jiaocheng 5 and both parents were determined by high performance liquid chromatography （HPLC）. The results showed that the sugars in fruit of the hybrid progenies were mainly composed of sucrose， fructose and glucose， of which sucrose accounted for 52.5%. The variation coefficient of sugar components ranged from 26.74% to 35.45%， with the highest variation coefficient of glucose and the lowest variation coefficient of sucrose. The average value of fructose and glucose in F₁ plants were higher than the median value of both parents， while sucrose was lower than the median value. The main acids were malic acid， quinic acid and citric acid， of which malic acid accounted for 35.10%. The coefficient of variation of acid components ranged from 29.67% to 42.86%. The mean value of malic acid in F₁ was lower than the median value of both parents， and the mean value of oxalic acid and fumaric acid was higher than the median value. The other acid components were largely environment-dependent. Both sugar and acid components showed normal distribution characteristics and were quantitative characters controlled by multiple genes. Finally， the optimal hybrid lines J17 and J70 with higher sugar content were identified.