1. Reduces pain during injection, eliminates fear in patients with needle phobia, and improves patient compliance;
2. Reduces allergy symptoms, etc.;
3. Improves the bioavailability of drugs in the body, shortens the onset time of drugs, and reduces costs;
4. Needle-free injection does not damage subcutaneous tissue and avoids the formation of nodules due to long-term injection;
5. Almost completely eliminates cross-infection and avoids the risk of occupational exposure;
6. Improves patients' anxiety and depression, and improves their quality of life.
