应用成本效用分析法对 88处改水降氟工程 (包括 80处打低氟井工程和 8处集中式骨炭除氟工程 )进行了比较和评价。结果 :(1)氟斑牙和氟骨症病人的IQL分别为 0 94和0 90 ,病情越重 ,IQL越小。 (2 )打井工程受益人口获得的人均效用为 10 0 0QALYs,集中式骨炭除氟工程受益人口获得的人均效用为 5 2 6QALYs,二者差异有显著性。 (3)轻、中、重病区改水获得的人均效用分别为 7 0 3、10 30和 13 5 7QALYs,病情越重 ,改水获得的效用越大。 The cost-effectiveness analysis method was used to compare and evaluate 88 water-and-fluoride-reducing projects (including 80 low-fluoride wells and 8 centralized bone-decontamination projects). Results: (1) The IQL of dental fluorosis and skeletal fluorosis were 0 94 and 0 90, respectively. The more severe the disease, the lower the IQL. (2) The average per capita utility obtained by beneficiary population of drilling engineering is 10 0 QALYs, and the per capita utility obtained by beneficiary population of concentrated bone carbon removal project is 526 QALYs. There is significant difference between the two. (3) The average per capita utilities of light, moderate and severe wards were 703, 1030 and 1357 QALYs, respectively. The heavier the disease, the greater the utility gained by water diversion.