The main differences between bladed needles and small needles are different shapes, different sizes, and different roles. 1. Different shapes: bladed needle is a tool like acupuncture, the tip of the needle is flat, more sharp. And small needle knife is the tip of the sharp blade. 2. Different sizes: the diameter of the needle of a bladed needle is generally between 0.3 and 0.6 millimeters, while the diameter of a small knife is about 0.8 to 1.0 millimeters. 3. Different roles: bladed needles have two therapeutic functions: needle knife and acupuncture needle, through the stimulation of acupuncture points to promote the acceleration of blood circulation in the tissues. At the same time, it can play the role of loosening hardened muscles and stripping fascial adhesions. It is mainly used to improve back pain, leg pain, shoulder pain, neck pain and other local tissue spasms, and is safer to use. The small needle knife is used to cut and extract to peel and improve the adhesion lesion tissue. It is suitable for tendinitis, fasciitis and other diseases, but there are certain dangers during the operation and scarring may be formed. However, whether it is bladed needle and small needle knife, it is necessary to go to a regular hospital and have a professional doctor carry out the treatment operation.