Introduction: Yicheng is located in the northwest of Hubei Province, in the middle reaches of Hanjiang River. Suizhou and Zaoyang in the east, Zhongxiang and Jingmen in the south, Nanzhang in the west and Xiangyang in the north. It is located at11157'-12 45' east longitude and 3126'-3154' north latitude. It is 76 kilometers long from east to west and 53 kilometers wide from north to south, with a total area of 2 1 15 square kilometers. At the end of 2006, the total population of the city was 564,500, including 228,600 urban residents and 335,900 rural residents. The annual birth population was 4,770, with a birth rate of 8.45 ‰. 3,278 people died, with a mortality rate of 5.81‰; The natural growth rate is 2.64‰.