Prior research has explored children's help-seeking tendencies in relation to the characteristics of help providers with a primary focus on the helper's competencies. In the current study, we propose that acknowledging a child's emotions without judgment, referred to as emotional validation, is another cue that guides children's help-seeking behavior. In Study 1, we surveyed mothers of children aged 3-6 years (N = 200) and found that their tendency to validate their children's emotions was positively associated with the children's help-seeking behavior, particularly among older children (5-6 years). In Study 2, a randomized experiment with children aged 3-6 years (N = 68) tested the causal effect of emotional validation on help-seeking behaviors. When presented with a challenging task, older children (5-6 years) were more likely to seek help from an emotion-validating adult than an emotion-invalidating adult. This pattern was not observed in younger children (3-4 years). These findings underscore the fact that by around the age of 5, children begin to integrate emotional validation into their social evaluations, using it as a critical cue in deciding whom to approach for help. This developmental shift highlights the role of emotional validation in fostering supportive relationships and promoting adaptive help-seeking behaviors.