The present research examined the effects of family-related factors on how parents perceive and choose physical activities that stimulate their children's physical fitness and motor development. Using the random sampling approach, a total of 284 4- to 5-year-old children (n = 147 boys; n = 137 girls) were included in the sample. These children's physical fitness [measured by the Manual of National Physical Fitness Evaluation Standard (China's Department of General Administration Buren of Sport, (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) ((sic)(sic)(sic)) [The manual of national physical fitness evaluation standard-child version], People's Sports Press, 2003)], large and fine motor development [measured by the Movement Assessment Battery for Children-Second Edition (Henderson et al., Movement assessment battery for children-2: Movement ABC-2: Examiner's manual, Pearson, 2007)], and their parents' attitudes toward physical activities [measured using the items of Parental Attitude toward Physical Activities scale (Wen, T. (2011). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) [An investigation research on current situation and reform of physical education in kindergarten]. Master dissertation. Inner Mongolia Normal University)] were assessed. The results showed that parental attitudes positively predicted the performance of two-feet jumping in the physical fitness measurement and negatively predicted the performance of post coins by non-dominant hand in the motor ability test. Children who participated in both competitive and leisure physical activity showed significantly higher scores on the motor ability test than children who only participated in leisure physical activity. The child who participated in both types of physical activity scored significantly higher in tennis ball throwing, catching bean bag, and jumping on mats test. Children who participated in competitive physical activity showed significantly higher scores in tennis ball throwing and jumping on mats. This study provided evidence that family-related factors (e.g., parental attitude towards physical activities and children's participation in activities) stimulate their children's physical fitness and motor development among Chinese preschool children. Discussions and implications of the findings about how to provide support for children's physical fitness and motor development, such as providing children more time for physical activities and more kinds of activities, were included.