With the rapid development of artificial intelligence (AI) technology, its application in special education has demonstrated great potential for enhancing educational effectiveness and promoting inclusivity. This article explores the current applications and future trends of AI in special education settings from a human-computer interaction perspective, with particular focus on children with autism. The paper first outlines the transition from universal computer-assisted education toward AI-driven specialized interventions that meet the personalized needs of special education students. Through research cases applying affective computing systems, speech recognition technology, and large language model tools for children, it illustrates how AI enables personalized learning and real-time feedback. Finally, the article prospects future directions for AI in special education, emphasizing human-centered approaches to support the comprehensive development of learners with special needs.