Both sides of the waist feel swollen, there are several common causes: first, acute lumbar sprain, lumbar muscle sprain after the lumbar muscle fiber damage, manifested as edema, exudation, causing lumbar muscle swelling symptoms, often persistent episodes, aggravated by activity, lumbar flexion and extension activities and rotation activities are significantly limited, rarely occurring lower extremity radiated pain, oral general pain medication has no significant effect, lumbar spine braking, bed Second, fitness exercises exercise the muscles of the low back, often need to carry out weight-bearing exercises, training the lumbar muscle congestion, can cause obvious swelling and pain symptoms, the general situation can be maintained for a few days to relieve themselves, lumbar muscle stretching can accelerate the rapid disappearance of lumbar swelling and pain symptoms.