This article is a part of a systemical study of the Chinese sternum. A total of 191 cases (male 111 cases, female 80 cases) of Chinese adult sternum werc measured. The chief results obtained are as follows:1. The sternal length is 147.6?1.24 mm in male and 137.54?1.30 mm in fcmale.2. The manubrium length of the sternum is 49.42?0.46 mm in male and 48.20?0.66 mm in female. The maximum width of the sternum is 62.96?0.65 mm in male and 59.61?0.71 mm in female. The minimum width of the sternum is 33.71?0.48 mm in male and 31.97?0.34 mm infemale. The thickness of the sternum is 10.19?0.09 mm in male and 9.97?0.16 mm in female.3. Thc length of the body of the sternum is 100.18?1.15 mm in male and 88.20?1.14 mm in female. The maximum width of the body of the sternum is 39.20?0.51 mm in male and 36.98?0.49 mm in female. The maximum thickness of the body of sternum is 12.43?0.22 mm in male and 11.50?0.21 mm in female.4. The length width index of the sternum is 26.66.5. The length width index of the sternal Body is 39.86.