Objective (s): The present study aimed to evaluate the effect of acceptance and commitment-based parenting education on childrenchr('39')s anxiety and parenting stress of mothers. Methods: Non-congruent multiple baseline experimental single-case studies were used as the method in the current study. Three anxious children and their mothers were selected through purposeful sampling in Ahvaz, Iran. The effectiveness of acceptance-and-commitment-based parenting education protocol was carried out in three phases (baseline assessment, 12 session treatment, and 1-month follow-up) by using the Spence Childrenchr('39')s Anxiety Scale-Parent Form and the Parenting Stress Index– Short Form). The data were analyzed by visual mapping, reliable change index and recovery percentage formula. The direction changes, PND, and POD were the most important variables of visual analysis of trend changes. Results: The mothers and childrenchr('39')s reliable change indices were significant in all the instances except for the second mother and child. The subjectschr('39') recovery percentage showed that the results of the reliable change indices and recovery percentages are consistent. Conclusion: Acceptance and commitment-based parenting education can reduce parenting stress and childrenchr('39')s anxiety by increasing parentchr('39')s acceptance, mindfulness, and moving toward parenting values..