The pain in the arm at night is mainly due to the strain caused by the high activity of the arm during the day, and there are some local inflammatory lesions, which slow down the blood circulation at night and cause the inflammation to accumulate, resulting in pain in the arm. In addition, due to the tendency to get cold at night, the blood circulation slows down and the inflammation builds up, resulting in more pain. The following measures are usually taken to address the above causes and mechanisms: 1. Be sure to keep your arms warm at night, never get cold, and try to wear thicker clothes to sleep. 2. Keep your arms in a relaxed state when you sleep at night, for example, you can put soft pillows under your arms in a lying position to effectively play a supporting role and keep the muscles and soft tissues around your arms fully relaxed. Full relaxation. In the side lying position, soft pillows are placed under the upper limbs to support the arms and keep the muscles relaxed. After meeting the warmth and muscle relaxation, the symptoms can be significantly relieved. 3, you can take oral non-steroidal anti-inflammatory painkillers, such as loxoprofen sodium, celecoxib, cronoxicam, etc. These drugs can effectively control local inflammation, reduce inflammatory edema and reduce pain. 4, you can use a warm water bag for hot compresses, the temperature of hot compresses should not be too high, generally to feel slightly hot, but can The standard, hot compress about 20-30 minutes or so can play a good effect. In addition to this, you can apply topical ointments that activate blood stasis and relieve tendons and channels, such as dog skin ointment and blood pain relief ointment to increase local blood circulation, promote inflammation metabolism and reduce pain.