Tingling and swelling of the arms may be caused by poor blood circulation, venous thrombosis, cervical spondylosis, cerebrovascular disease, rheumatic disease and diabetic peripheral neuropathy. 1. Poor blood circulation: prolonged squeezing of the arm can cause poor blood circulation, resulting in ischemia of the arm muscles, thus causing numbness and swelling of the arm. 2. Venous thrombosis: venous thrombosis can lead to slow blood flow, high blood coagulation and vascular damage, etc. Due to slow blood flow, the upper limbs can not effectively obtain oxygen and nutrients, and are prone to soreness and numbness. 3. Cervical spondylosis: cervical disc herniation or cervical spondylosis will cause upper limb nerves to be compressed and stimulated, resulting in soreness, numbness, swelling and pain in the arms. 4. Cerebrovascular disease: when acute cerebral infarction or acute cerebral hemorrhage, one side of the arm can be sore, numb, persistent and unrelieved, and can be accompanied by the same side of the limbs of the weakness, speech is unfavorable. 5. Rheumatic diseases: for example, rheumatoid arthritis, patients may manifest as numbness of the arm. 6. Diabetic peripheral neuropathy: diabetic peripheral neuropathy because of the damage to the peripheral nerves can cause arm pain and numbness. Arm numbness may also be due to upper extremity vascular stenosis, trauma, cardiovascular disease and other reasons, should be examined and treated in the hospital.