Autism, also known as Autism Spectrum Disorder (ASD) or Asperger's syndrome, has an impact on cognition, social relationships, and behaviour. Based on these characteristics and their learning interests, e-learning recommendation systems attempt to provide personalized recommendations. This may enhance the learning ability of individuals with ASD. However, some technological challenges limit the ability of the population to use support scenarios and prevent efficient learning. This study tries to review elearning recommender systems for individuals with ASD. The main identified aspects are 1) a lack of design principles while building customized e-learning platforms for those with ASD, 2) technological limitations to developing recommender systems for e-learning, and 3) suggestions that reduce field limitations. The studies additionally discovered that social communication and psychological abilities had the greatest focus of study. A small number of studies mentioned the participant's ASD level, the majority of the articles highlighted the beneficial effects of designing a content-based recommender system specifically for those with ASD.