Stage 1 The cross-sectional study was done to estimate the incidence of stunting, deficiency / effeciency of Vitamin D according to age 7 group and gender and describe some risk factors related to the stunting and deficiency / effeciency of Vitamin D These factors were the scientific basis to start the intervention solutions to improve the stunting status in children aged from 12 to 36 months at Kim Dong, Hung Yen in 2017.