Previous research show that there is a knowledge cap in investigations on how social workers are supposed to interpret the nursing needs for children, in which the parent who has custody of the child is responsible for. The same knowledge cap is shown in how ”child's best” is supposed to be interpreted by social workers and be a red thread in the investigations. Which also leads to help interventions being given to children when the parent does not fulfill the nursing needs of the child, which is always not clear. Therefore the purpose of the study was to understand how social services interpret the nursing needs and shed light on how social workers interpret the ”child’s best” and how they work with children when the parents do not fulfill the nursing needs. Therefore in this study 8 interviews have been executed with social workers from different county’s around Sweden. The result shows that the interpretation of nursing needs for children is interpreted by the working model BBIC and that children should feel safe and not be at risk of getting hurt. The ”child’s best” means from the perspective of social workers shows that what is best for the child is to stay with the biological parents and that they are stable and emotionally available. The social workers work with children through family therapy, since focus is on helping the whole family. Help interventions are rarely only given to children alone, unless the child is over 15 years of age.