In order to investigate the fat composition of different parts of Ziziphus jujube,Soxhlet extraction method was adopted to extract fat from jujube pulp,peels and seeds by petroleum ether extraction. Derivative GC-MS analysis was applied. The results showed: 1) fat in jujube seeds was( 13. 5 ± 3. 6) % of the total weight which was the highest,followed by in the peel( 6 ± 2. 5) % and in the pulp( 2. 4 ± 1. 5) %; 2) 12 chemical constituents were identified from jujube pulp fats which was 82. 34% of total chromatographic peak area; 9 chemical components from the peel( 81. 66%),and 15 components from the seeds( 59. 40%) were also identified; 3) it's found that a certain amount of unsaturated hydrocarbons,unsaturated fatty acids,saturated fatty acids and amides were in peel,pulp and seeds,and peel had more content than in pulp and in seed.