Introduction and the aim: To examine parents of children with malignant diseases about frequancy of searching health information on Internet. Subjects and methods: The reaserch was conducted on random sample of 50 parents at University Hospital Centre Zagreb for three months in 2023. Data were collected using questionnaire „Internet use by the public to search for health-related information“. Data were analyzed using descriptive statistics methods, statistical significance was set on P<0.05. Results: More than a half of parents search Internet for health information (N=38), usually less then five times a month (N=18). Mothers, unemployed parents, those with high school education and those with children on maintenance therapy trust more in health information found on Internet. Mothers, high school educated, employed and those with children in the middle of the treatment are more likely to apply them without consultation with physician. Respondents are significaly less satisfied with information found on Internet compared to those recieved from physicians and nurses. No significant relationship was found between frequency of Internet searching and satisfaction with information recieved from physicians (r=0.052) or nurses (r=-0.150). Conclusion: The results shows that parents who are not satisfied with information from doctors and nurses wouldn't search it more frequently on Internet. Education should be directed towards valid sources of information in order to improve care for children with malignant diseases.