In daily life, patients in the writing of the upper limb has a number of muscles, muscle groups, to participate in the movement, so the patient can write to make the muscles of the upper limb, muscle groups, to strengthen the toughness and elasticity, but also can reduce the tension and pressure within the muscle, effectively preventing the emergence of inflammatory factors. And can promote local lactic acid metabolism, strengthen the local metabolism, but also can accelerate local blood circulation, improve microcirculation. The exercise of writing can effectively prevent the emergence of venous thrombosis, and can also prevent the emergence of muscle atrophy or prevent the emergence of joint stiffness and other clinical manifestations. When the patient writes, the patient must be instructed to maintain a good and correct writing posture, which can improve the efficacy of writing exercise.