In daily life, when sleeping with the leg up, it will lead to external stimulation of the popliteal fossa and compression of the tibial artery, tibial nerve and surrounding subcutaneous nerves in the popliteal fossa, which will affect the blood circulation of the lower limbs, resulting in decreased skin sensation, numbness, muscle weakness and tingling in the lower limbs, and it will also easily lead to the possibility of blood clots. Therefore, do not support your legs for too long when sleeping, you should change your sleeping position appropriately, pay attention to warmth in the knee area, give hot compress treatment, or use traditional Chinese medicine fumigation, you can also carry out traditional Chinese medicine techniques, leg massage to accelerate local blood circulation and improve clinical symptoms. Therefore, it is important to maintain a good sleeping posture when sleeping in order to avoid the occurrence of undesirable phenomena.