This study aimed to verify the effectiveness of functional communication training and Differential Reinforcement of Other Behavior in reducing behavioral problems in 8 children with Autism age means 76 months and IQ 90,25 ,using a set of training sessions administered individually.The present study is based on experimental approach which depends on one set of individuals called the experimental group. The study result revealed there are differences are statistically significant at 0.01 level between the average pre and post test for measuring the average sample of the behavioral problems scale in children with autism after Functional Communication training and Differential Reinforcement of Other Behavior