Through the story-based vaccination process, let the injection become a seal-like game, guide children to understand the "force seal" can make them healthier, children can choose their favorite seal pattern, this action can increase interaction with children to reduce their fear, through the design to change children's fear of injections, access to a better medical experience, and in the size of the product can be better to let children press, can effectively reduce the risk of bruising and wound infection after injection.