This is a needleless syringe designed for children with diabetes. Based on needleless injection technology, the rocket space element is combined with insulin injection. Children using insulin syringes will be taken on space missions to make interesting associations to avoid injection fears. The bottom of the syringe can be replaced with a rocket fuel capsule to facilitate vertical injection.The rabbit astronaut appearance button on the top brings fun and safe feeling to children, helping children get a good use experience to meet their physical and mental health.