Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social communication, restricted and repetitive behaviors, and narrow interests. Given the high prevalence of ASD and the lack of specific pharmacological treatments, there is a pressing need for alternative therapeutic approaches. Acupuncture has shown promise in improving the clinical symptoms of ASD. This report presents the case of a 6-year-old girl diagnosed with ASD, intellectual developmental disorder, attention deficit hyperactivity disorder, and articulation disorder. She underwent Liu’s pediatric neurological rehabilitation acupuncture therapy (PNRAT) for over 2 years. The treatment involved specific scalp acupuncture techniques targeting cognitive and linguistic rehabilitation. After the treatment course, the patient showed significant improvements in cognitive, linguistic, social, and behavioral symptoms, transitioning from limited verbal communication and marked social difficulties to thriving in a mainstream school setting. This case highlights the potential of Liu’s PNRAT as an effective intervention for ASD. The observed improvements suggest that acupuncture may offer valuable therapeutic benefits for children with ASD, contributing to the growing interest in its potential as an adjunct therapy. Further research is needed to optimize treatment protocols and explore synergies with conventional therapies.