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Abstract To understand the current situation of preschoolers' motor coordination ability, and to provide evidences for early exercise intervention plan of preschoolers. Methods: From August 2018 to August 2019, a total of 972 preschoolers aged 3-6 years were selected from 6 nursery institutions in Beijing. The children's sports coordination ability assessment tool (MABC-2 test) was used to evaluate the children's sports coordination ability. Results: The subjects were divided into 7 groups, which included 3.0-3.5 years old group, 3.5-4.0 years old group, 4.0-4.5 years old group, 4.5-5.0 years old group, 5.0-5.5 years old group, 5.5-6.0 years old group, and 6.0-6.5 years old group. With the increase of the children's age, the hand dexterity time decreased continuously (P<0.001), and the number of successful target grabbing and the static balance maintenance time increased continuously (P<0.001). The hand dexterity time of boys was significant higher than that of girls (91.9, 84.4; P<0.05), the maintenance time of static balance of boys was significant lower than that of girls (37.4, 25.1; P<0.05). There was no significant different in the number of successful target grabbing before 5.5 years old between boys and girls. Conclusion: The motor coordination ability of children with different genders is different at different ages, and participation in early education and motor skill classes may be a protective factor for children's hand dexterity.
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