Autism spectrum disorder is associated with sensory processing challenges that can lead to excessive excitement in conventional educational spaces. This study aimed to measure the effectiveness of physical components designed based on Kansei Engineering in reducing excitement in autistic individuals. The present study was conducted using a mixed-method (qualitative-quantitative) approach with Kansei Engineering. The statistical population consisted of 40 high-functioning autistic individuals in Tehran. The independent variables were the physical components of "color," "texture," and "scent," while the dependent variables were excitement (measured using the PANAS scale) and physiological indicators (heart rate and blood pressure). Data were collected through a seven-point Likert scale questionnaire, behavioral observation, and physiological monitoring during the presentation of environmental scenarios using virtual reality (VR), and were analyzed using SPSS software. The results showed that designing the environment based on sensory preferences has a significant effect on reducing negative excitement and physiological arousal. The component of "mild scents" (e.g., lavender), followed by "cool and light colors" and "soft and uniform textures," respectively, had the greatest impact on inducing calmness. The dominant sensory preference was identified as visual, followed by olfactory. When the physical environment of education is designed based on the sensory perception and preferences of autistic individuals using the systematic method of Kansei Engineering, it can serve as an effective tool for emotional regulation, creating a safe space, and improving focus and learning. This research provides more objective guidelines for designing inclusive educational spaces.