Study aim: Investigating the effectiveness of internet based mindfulness training on parental stress,illness perception,coping styles, and quality of life in parents of children with autism. Design: This is a quasi-experimental study with a pretest–posttest design and a control group; 40 participants will be randomly allocated to intervention and control groups (20 participants per group), and the study will be conducted without blinding. Settings and conduct: The study population consists of all parents of children with Autism Spectrum Disorder in Semnan who are within one year of their child’s confirmed diagnosis by accredited centers.The data will be statistically analyzed using SPSS software (version 26).Descriptive statistics and inferential statistics, including multivariate analysis of covariance (MANCOVA) and univariate analysis of covariance(ANCOVA) on post-test scores while controlling for pre-test scores,will be used. Participants/Inclusion and exclusion criteria: Inclusion criteria:1.Having a child with a confirmed and valid diagnosis of autism spectrum disorder.2.No more than 12 months having elapsed since the child's diagnosis.3.Residency in the city of Semnan.4.Ability to read and write in Persian.Exclusion criteria:1.Absence from more than two intervention sessions.2.Onset of an acute psychiatric disorder or severe illness in the parent or child.3.Occurrence of a family crisis affecting continuation of the study.4.Withdrawal from the research. Intervention groups: Eight sessions of internet based mindfulness training The control group does not receive the intervention during the study period and is assessed after the study concludes. Main outcome variables: Independent variable: Internet information literacy.Dependent variables: Parental stress.Dependent variables: Perceived illness.Dependent variables: Coping styles.Dependent variables: Quality of life