The cases of morbidity and mortality of babies and toddlers are continue to occur because of negligence of the mothers in providing complete basic immunization to their babies. This study is a cross-sectional study that was conducted to identify the predisposing, enabling, and reinforcing factors that influence full basic immunization coverage. The study was performed on mothers who had 9-12 months old child spread in 22 villages, purposively selected through from 22 community health centers in Bangkalan District, Madura Island. 200 mothers were selected as the study's respondents. The data were collected through questionnaires and from the book of "Kesehatan Ibu dan Anak" (KIA). The result of the study was obtained using logistic regression statistical test and it showed that the factors that influenced of full basic immunization coverage in Bangkalan District, Madura Island, were family income as predisposing factor (OR=2.26; 95% CI= 1.14 to 4.51; p= 0.020); health facility as enabling factor (OR=3.03; 95% CI= 1.59 to 5.80; p= 0.001); and community leader support as reinforcing factor (OR=2.56; 95% CI= 1.33 to 4.92; p= 0.005).