Finger joints palm hard lumps, common causes are mainly the following situations: a. Tendon sheath cysts, is due to repeated wear and tear of the tendon sheath of the finger joints and the formation of chronic inflammatory changes. If the tendon sheath cyst is small in size and does not affect normal function, it can be closely observed temporarily without surgical removal. If in the process of observation, tendon sheath cyst volume increases and accompanied by pain symptoms, it is recommended to perform surgical resection, complete resection of the cyst wall during the operation, to avoid recurrence of the cyst. Second, local proliferation of bone tumor, mostly seen in children or elderly patients, due to the increase in the volume of tumor cells, it will invade to the surrounding tissues and form hard lumps. The size and scope of bone tumor can be clarified by perfect X-ray or CT examination, and the tumor cells can be excised as early as possible. Combined with local radiotherapy and systemic chemotherapy to kill the cancer cells in the body, to avoid the recurrence of hard lumps in finger joints.