The differences of the estimated time for the heavy activities and the estimated time for rest and weak activities: The estimated time used for rest and weak activities (such as study, watching TV, playing games...) are much more than the estimated time used for heavy activities (such as excercises, have a good merry). Conclusion: The nutrition status of children in Kim Dong primary school shows that the nutrition clay model at township is change and become likely with the model of big cities (the malnutrition rate is down, beside the percentage of children who have overweight and obesity is; rising more and more).