Two thirds of children does not meet physical activity (PA) guidelines in China. The fundamental movement skills (FMS) level is a good predictor of physical activity levels and weight status in children. Also, early motor skill has long-term effect on individual’s PA level. So, understanding the relationship of FMS and PA is important for physical activity intervention planning. PURPOSE:To analyze the relationship of daily physical activity participation and the motor ability of children aged 7-8 years. METHODS: The Movement Assessment Battery for Children-2 (M-ABC-2) and the Test of Gross Motor Development - 2^nd edition (TGMD-2) were used to test the motor ability of 91 children aged 7-8 years. The ActiGraph GT3X+ accelerometer was used to measure the physical activity participation for 7 consecutive days. RESULTS: The total time of boys spent in moderate physical activity (MPA) and moderate-to-vigorous physical activity (MVPA) was 21.4±7.5min and 27.3±11.2min, respectively, which was higher than those of girls (17.5±7.4min and 22.2±9.7min, P<0.05). The score of object control subscale in boys was 6.73±2.49, which is better than that of girls (5.71 ± 2.14, P <0.05); children's fine motor skill and locomotor skill were positively correlated with VPA, MPA and MVPA (r = 0.2 ~ 0.3). CONCLUSION: In this study, children spent less time in MVPA, especially in girls. The development of object control ability in boys is better than that of girls; there is a positive correlation between children's fine motor skills and physical activity. Therefore, children need to learn and practice FMS for participation and maintenance of PA. FMS should be tested in primary schools, so weaknesses could be identified in children and improved via proper intervention.Supported by The National Social Science Fund of China(Key Project of National Education Science, ALA190015)