Abstract: Objective： To evaluate the effect of comprehensive contraception intervention on the intrauterine device（IUD）?鄄related knowledge, usage and examination of IUD among floating population in Sichuan project communities. Methods： This study is a epidemiological intervention study. In intervention groups, comprehensive intervention measures including avocation， training, education， propaganda， integrated sexuality and reproductive health counseling，standard management, were implemented. Routine family planning work was conducted in control groups. By questionnaire survey pre- and post-intervention， the effects of intervention were evaluated. Results： 2 197 migrants were included in baseline survey， while 1 877 subjects were followed up. The awareness rate of IUD type of intervention group was increased from 39.17% to 56.40% by the integrated intervention（χ２＝２２．２９２ ８， Ｐ＜０．０００ １）． The proportion of subjects who had IUD examination in the current city was promoted from 55.76% to 79.27%（χ2=45.927 2，P<0.000 1）. Logistic regression analysis showed that migrants in factory, migrants with whole family, migrants who were asked to provide certificates of marriage and procreation as the regulation of floating population by their current cities, had higher probability of IUD examination. Comprehensive intervention improved the probability of IUD examination（ＯＲ＝１．４００， ９５％ ＣＩ：１．１２３～１．７４５）． Ｃｏｎｃｌｕｓｉｏｎｓ： Ｃｏｍｐｒｅｈｅｎｓｉｖｅ ｉｎｔｅｒｖｅｎｔｉｏｎ ｉｍｐｒｏｖｅｄ ｔｈｅ knowledge of IUD, and promoted the probability of IUD examination.

Key words: Population, Health services, Contraception, Intrauterine devices, Intervention studies