Over the past decade, a large number of literature reviews have explored the effectiveness of virtual reality technology as applied to children with autism spectrum disorder (ASD), but there has been a lack of scope focus on different types of virtual reality systems in assessment and intervention for children aged 3-12 years and a lack of generalization of the main uses of virtual reality technology in children with ASD. Therefore, this paper aims to analysis the assessment and intervention of different virtual reality systems for children with ASD by searching seven databases with a total of 52 studies. In this paper, a comprehensive and systematic search of seven well-known online databases covering the time period from January 2014 to December 2024 was conducted. The databases searched included Wed of Science, PubMed, IEEE Xplore Digital Library, Science Direct, and ACM Digital Library, PsycINFO, ERIC. The studies had to address all aspects of assessment or intervention education for children with ASD aged 3-12 years. The first and second authors completed a quality assessment of the literature. Fifty-two studies were obtained through inclusion criteria and literature quality assessment. Data coding was used to extract key information about the studies from the literature of the included studies to facilitate analysis and discussion of the findings. The results show that (1) Aged 6-12 years and high functioning or mild/moderate ASD children were the selection bias of most researchers; (2) Virtual Reality (VR) is effective in assessment and intervention applications; (3) Head-Mounted Display VR (HMD VR) might cause excessive perceptual sensitivity in children with ASD, which required desensitization experiments; (4) Desktop VR seems to be the most common among researchers. The study concluded that Desktop VR, Handheld VR, Projector VR, HMD VR, and CAVE VR are all effective in assessing and intervening with children with ASD. However, future research should explore how best to implement them in lower age groups and in different systems.