The volatile compounds in the peel of Xinli No.7 collected from Alar,Xinjiang and Baoding,Hebei Province were detected with HSSPMEGCMS,and compared with that of P. bretschneideri Rehd ‘Zaosu’ (the male parent) and P. sinkiangensis ‘Korla’ (the female parent) collected from Alar to explore the changes of volatile profiles of hybrids. The results showed that a total of 119 volatile compounds were detected in all samples. 55,53,56 and 100 volatile compounds were detected in Xinli No. 7 from Xinjiang and Hebei and its parents. The total content of volatile compounds in the peel of Xinli No. 7 from Xinjiang and Hebei Provinces was 4.52 and 2.48 times that of the male parent,and 0.47 and 0.26 times that of the female parent. Compared with its parents,8 and 42 volatile compounds were under detection level in Xinli No.7. (E)2Octenal,1dodecene,cedrol,2heptanone,2decanone and 1,2,4,5tetramethylbenzene were newly detected in Xinli No.7. (E)2Hexenal and hexanal was the highest content ingredient shared by the four. (E)2Hexenal,hexanal together with other 5 compounds in peel of Xinli No.7 were close to the high content of its parents,while the content of 30 compounds was close to the low content of its parents. In general,the types of volatile compounds in Xinli No. 7 were less than those of the parents,but 6 new types were added. The total content in hybrid was higher than that in the male parent and lower than that in the female parent. Different origin areas had an impact on the volatile profiles of Xinli No.7. 〗