Fu's Subcutaneous Needling (FSN) is a modern acupuncture technique developed by Zhonghua Fu that targets the subcutaneous connective tissue and myofascial system rather than traditional acupuncture points alone. Using a specialized needle inserted superficially under the skin, FSN aims to reduce muscle tension, improve circulation, and restore functional movement. It is commonly used to treat musculoskeletal pain, soft tissue injuries, and chronic conditions.

Clinical research suggests that Fu's Subcutaneous Needling may help relieve pain, improve mobility, and enhance rehabilitation outcomes, particularly for neck, shoulder, and low back disorders. Studies indicate the technique is generally safe when performed by trained practitioners.