Stunting is a condition of failure to thrive in children under five due to chronic malnutrition, especially in the first 1000 days of life. The handling of stunting in East Flores Regency through the innovation "Gerbak Cinta" has reduced the prevalence of stunting from 31.07%, (2019), to 20.9% (2021). Even though the stunting prevalence has experienced a decreasing trend, the Gerobak Cinta innovation prioritizes efforts to handle PMT cases which is focused on utilizing local food. Therefore, prevention efforts are needed to accelerate the reduction of stunting. Improving the nutritional status of pregnant women is one of the strategies to prevent stunting in newborns. Human Development Cadres (KPM) are part of the acceleration team reduce stunting at the village level, one of whose tasks is to collect data on the target of 100 HPK. Through this study, the role of KPM will be enhanced by providing comprehensive assistance and nutrition education to pregnant women. To find out the effect of stunting prevention in pregnant women through the assistance of Human Development Cadres in the working area of the Lato Primary Health Care, Titehena District, East Flores Regency. This study used a one group times series research design with pre-test and post-test designs. The population in this study were pregnant women in the first and second trimesters. The sample was taken using a total sampling technique, meaning that all populations were sampled, namely 38 pregnant women in the first and second trimesters. This study shows that there is an assistance influence by KPM on the knowledge, attitudes, and actions of pregnant women in preventing stunting with a p-value of knowledge (p=0.000), attitude (p=0.000) and action (p=0.000) with a value of α = 0.05. There is an influence of the assistance of Human Development Cadres (KPM) on the knowledge, attitudes and actions of pregnant women in the first and second trimesters in the working area of the Lato Primary Health Care, Titehena District, East Flores Regency in preventing stunting.