The main purpose of this research is to determine the state of physical activity level among children of early and pre-school age and to establish whether there is a statistically significant difference between boys and girls. The parents of a particular child are asked to fill up ̋Survey questionnaire-to assess the level of physical activiy of children ̋ for their own child. For the purpose of this research, by random selection, a sample of 38 subjects were examined among children of early and pre-school age who attend Children's Kindergarten Rijeka. The results of the research showed insufficient number of children who are physically active, according to the World Heatlh Organization and their optimal recommendation of 60 minutes moderate to high body activity per day. According to the results of the study, none of the subjects were physically active during all seven days of the week. However, 55,5% of girls and 65% of boys are physically active 60 minutes per day for six days. Also, regarding the results of physical activity from moderate to high intensity, slightly more than half of the tested subjects are physically active only 60 minutes a week by said intensity, unlike the recommended 60 minutes per day. The results show gender difference. There is a statistically significant (p=0,0) higher activity among boys according to the number of physically active days and the higher percentage of boys who are active in moderate to very intense physical activity than girls. None of the respondents is at a satisfactory level of physical activity. It can be said that the health of children is seriously compromised due to their inadequate amount of time spent in physical activity. This research has shown that the problem regarding insufficient movement occurs at the earliest age and that there should be taken all necessary measures to increase the physical activity among children in their free time.