Emotion dysregulation is one of the challenges that children with autism spectrum disorder (ASD) and their families face. It is unclear whether emotion dysregulation plays a mediating role in the relationship between sensory processing patterns and problem behaviors among these children. This study examined the relations between emotion dysregulation, behavioral problems, and sensory processing patterns among fifty-seven young children with ASD. Behavioral problems and sensory processing patterns were moderately to strongly correlated with emotion dysregulation. The relationship between sensory processing patterns and behavioral problems was significant with emotion dysregulation as a mediator. These findings help identify the relationship between emotion dysregulation, sensory processing patterns, and behavioral problems to facilitate the planning of intervention strategies for young children with ASD.