This article is a part of a systematical study of the Chinese sternum. A total of 191 cases (111 males, 80 females) of Chinese adult sternum were measured. The chief results obtained are as follows:1. The sternal length is 147.6?1.24mm in the male and 137.54?1.30mm in the female.2. The manubrium length of the sternum is 49.42?0.46 mm in the male and 48.20?0.66mm in the female. The maximum width of the sternum is 62.96?0.65mm in the male and 59.61?0.71mm in the female. The minimum width of the sternum is 33.71?0.48mm in the male and 31.97?0.34mm in the female. The thickness of the sternum is 10.19?0.09mm in the male and 9.97?0.16mm in the female.3. The length of the body of the sternum is 100.18?1.15 mm in the male and 88.20?1.14 mm in the female. The maximum width of the body of the sternum is 39.20?0.51 mm in the male and 36.98?0.49 mm in the female. The maximum thickness of the body of sternum is 12.43?0.22mm in the male and 11.50?0.21 mm in the female.4. The length-width index of the sternum is 26.66.5. The length-width index of the sternal body is 39.86.6. The width-thickness index of the sternum is 31.00.7. The index of the length of the sternal body and the manubrium is 50.00.8. The index of the length of the sternum and the manubrium is 34.38.9. The index of the width and the length of the manubrium is 80.00.