It is extremely important to provide psychosocial support to mothers have a primary caregiver role in the children's diagnosis and treatment of cancer. Before providing this support, we planned this study to determine the coping behaviors that mothers used the most and believed to be the most beneficial. Mothers of 23 children aged 0-9 years with different cancer types were included in the study. Coping Health Inventory for Parents (CHIP) was used to evaluate mothers' coping behavior. The most useful behaviors for mothers were determined by calculating the total score of each sub-dimension and the scores per item in these sub-dimensions with the descriptive statistics calculations. The relationships between sub-dimensions were examined with Spearman Correlation analysis. Coping behaviors mothers find most useful, “Telling myself I have many things I should be thankful for” in the dimension of family integration; “Talking with other individuals/parents in my same situation" in the social support dimension; "Reading more about the medical problem which concerns me" in understanding the medical situation. Points per item were calculated as 2.02 for family integration, 1.5 for social support and 2.01 for understanding medical situation. All sub-dimensions show a positive relationship (p<0.05) with each other, the dimensions of maintaining family integration and understanding the medical situation show relationship strongly (p<0.01). Multidisciplinary studies are required for approaches that strengthen family relations and improve mothers' knowledge of medical issues as much as possible. Keywords: Family, Coping, Childhood Cancer