Palm swelling may be physiological factors, but also may be the manifestation of certain diseases, such as carpal tunnel syndrome, upper extremity venous thrombosis, cervical spondylosis, palm trauma, etc., should be timely consultation to identify the cause of the disease. 1. Physiological factors: may be caused by too much manual activity or lying on the side for a long time, etc., because the hand is fixed in a position, resulting in poor blood circulation, causing swelling of the palm. Pay attention to the hand work more activities such as wrist and arm parts, sleep to avoid a posture of compression of the arm, change the posture can be returned to normal. 2. Pathologic factors: (1) palm trauma: palm local contusion, pressure injury will lead to subcutaneous soft tissue and capillary rupture bleeding, thus palm swelling, edema phenomenon. (2) Carpal tunnel syndrome: generally refers to the compressive nerve disease caused by the compression of the median nerve in the wrist joint area, which may be caused by long-term poor posture and overuse of the wrist, resulting in the narrowing of the carpal tunnel, and thus the phenomenon of palm swelling. (3) Upper extremity venous thrombosis: the formation of blood clots in the veins of the upper extremity can lead to poor arterial blood, resulting in ischemia of the limbs, leading to the phenomenon of swelling and numbness in the palms of the hands. (4) Cervical spondylosis: keeping the head down for a long time and other bad postures will cause long-term strain on the cervical vertebrae, osteophytes or herniated discs, etc., which will also cause swelling and numbness in the palms of the hands. Palm swelling may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.