Finger joint callus is also finger joint skin callus formation, often because of long-term local pressure, wear and tear, thus stimulating the skin’s cuticle proliferation, hardening callus, that is, callus. Mainly due to the hands in daily work, sports, life is the most used, and in the labor of the joint parts of the skin will be too much friction, extrusion, thus causing the skin’s cuticle hardening, hyperplasia, belong to the physiological reaction. This is a physiological reaction. It mainly plays a protective role for the joints and the joint skin, but because of the hardening and thickening of the skin caused by hyperplasia, there is also a corresponding squeezing pain when it comes into contact with objects. Therefore, moderate hyperplasia plays a protective role, but excessive hyperplasia and hypertrophy can cause pain and discomfort. This problem should be protected by protecting the joints of the fingers from excessive squeezing and wear and tear, and you can wear gloves to work and protect the skin of your hands. If the corpus callosum is too much, too thick, and too large an area can be treated surgically.