This study aimed to investigate the morphological characteristics of various adipose tissues in yaks.Samples of subcutaneous,intermuscular,and perirenal adipose tissues were collected from five male yaks,each ap-proximately four years old.Histological analysis was performed using Hematoxylin and Eosin(H&E)staining to ex-amine cellular morphology and to quantify the number of cells per unit area as well as the average cell size.The re-sults revealed that yak adipose tissues exhibit a honeycomb-like structure with relatively large cell sizes.The aver-age cell areas of subcutaneous,intermuscular,and perirenal adipose tissues were(1 513.08±167.87)μm2,(1 367.80±152.79)μm2,and(1 872.67±413.0)μm2,respectively.These findings provide valuable ref-erence data for further research on yak adipose tissues.