Toilet training to children is an effort to train the children to be able to control the urinate and defecate process. Toilet training can conduct to children on 18 months-2 years old. In this training, children needs prepara on physically, psychologically and intellectually, So children expected to be able to control the urinate and defecate by them selves. The study aims is to find out the correla on between knowledge, educa on level, occupa on and mother's ages with the implementa on of toilet training to children. This was a quan ta ve analy cal study with cross sec onal approach. The samples were 41 respondents in early childhood Cerliana Islam. The sampling was used saturated sampling techniques. The data collec on was used ques onnaires. The data analyze was an univariate and bivariate with chi-square test at the 95% confidence level used a computer program. The results showed. There was a significant correla on b et we e n m o t h e r 's k n ow l e d ge ( p = 0 . 0 0 ) , w i t h t h e implementa on of toilet training in children aged 3-5 years in early childhood Islam Cerliana Pekanbaru. It is recommended to mother to train their children to urinate and defecate in the toilet early. The other side, it is recommended to school especially teachers to teach toilet training early to children by avoid the use of diapers.