Anticipatory Toilet Training Guidance (BATT) is the attempt of nurse to parents in order that the toddlers conduct the function of urination optimally. Toilet training is necessary to be carried out by parents and toddler at the age of 28-48 months; if it is not conducted the children will have enuresis which will lead into health problem and development problem. This study aimed to find out the effect o f BATT toward the knowledge, mothers’ attitude and enuresis incidence on toddler. This study was conducted for two months in service area of Bandar Lampung health center. The study design was quasi experiment with two group pre test and post test design. The population of this study was all toddlers in service area of Bandar Lampung health Center. The size of the sample was calculated by using non-pair numerical analytic study formula, which were case group of 30 toddlers of control group. Sample was chosen by using consecutive sampling with inclusion criteria those are that the mother was cooperative, they are biological children, did not have urinary tract infection, kidney function disorder, diabetes mellitus, back bone problem: spina bifida, has proper development, has no psychological problem such as depression, regression, sibling rivalry and did not consume diuretic medicine. Intervention is in a form of BATT toward toddler with BAAT module and toilet training and the follow up of case on toddler. The data collection was conducted by using questionnaire and observation sheet. Univariate data analysis with mean and deviation standard (SD); bivariate analysis was conducted by using Wilcoxon and Mc Nemar test. The result shows significant difference of average mother knowledge before and after BATT (p value=0,00); significant difference of average mother attitude before and after BATT (p value=0,026); significant difference of enuresis incidence on case and control group (p value=0,020).