Finger cracking occurs finger ringing, common cartilage damage, joint instability and other hazards, as follows: 1, cartilage damage: finger cracking leads to ringing at the same time, it will cause serious wear and tear of the joints, cartilage, and even cause the impact of the joint surface, the patient will have serious degeneration of the joints, cartilage, which will lead to gradual pain and deformation of the joints, affecting normal life and movement. 2, joint instability: repeated finger cracking induced ringing will cause damage to the joint capsule and lateral collateral ligaments, which will lead to joint instability in the long run and the speed of joint degeneration will be accelerated accordingly. Patients are prone to interphalangeal arthritis, interphalangeal joint pain and restricted movement, and in severe cases, it has to cause interphalangeal joint deformation, osteophytes, thus affecting the normal life and movement of patients, so patients should not usually break their fingers to induce ringing.