【Objective】 To investigate the diet behavior of children aged 7 months~4 years in 2 communities of Xi'an city, and to provide the guidelines in unhealthy diet behavior in territorial children. 【Method】 Randomly selected 168 children aged 7 months~4 years in 2 communities of Xi'an city, to investigate via parents-filled at questionnaire, including children personal background, characteristics of diet behavior in children, feeding-up behavior in parents and management of children diet behavior. 【Results】 Situation of children diet behavior: 11 children(6.5%) in normal group showed none of diet misbehavior; 157 children(93.4%) existed diet misbehavior; none of significant difference between gender or between urban and outskirts children could be found. 7 total detection problem, 78 children eating time too long, 85 children were not interested in food, 38 children refused to certain food, 56 children did not want to trying new food, 81 children strongly favored some food. 101 meals distraction, 77 meal sites were not fixed. There was significant difference between two groups. 【Conclusion】 Emphasis for children diet misbehavior should be strengthened and scientific feeding-up know-how had to be promoted for children's healthy growth.