Objective To understand the status of physical fitness and life style condition of 3~6-year-old children in Zibo,to promote national fitness campaign of Zibo and to provide a basis for formulating children's sports policy. Methods A total of 704 children aged 3~6-year-old were selected to physical test and questionnaire investigation adopting the principle of random cluster sampling,and their shape indexes,function indexes,quality indexes and lifestyle were analyzed. Results The age differences of Zibo 3~6-year-old children's physique test indexes was significant.The height,sitting height,body weight of 3~6-year-old male children had no significant difference with female children,but the bust was significantly larger than female children,and infant upper arm,shoulder sebaceous thickness of 4 and 5-year-old male chileren were less than the same age female children.For physical quality,the upper and lower extremity strength,speed and agility of male children were better than female children,but the flexibility and balance ability were contrast.Characteristics of Zibo 3~6-year-old children were high and strong,more subcutaneous fat,but physical quality outstanding,better strength,speed,sensitivity and weaker balance ability,general flexibility and coordination.As diet life style,Zibo children needed to reduce the intake of high calorie or low nutrition food. Conclusions The age and gender differences of 3~6-year-old children's physique test indexes are significant in Zibo.Strengthen physical training and improve their life style is an effective way to enhance children's physical fitness.