The soft rib pain on both sides of the waist consider chondromalacia, osteoporosis, muscle strain, herpes zoster and so on. 1. Costal chondritis: strain or trauma can cause non-specific costal chondritis, mainly pain in the soft ribs, deep breathing or coughing, activity chest wall pain aggravation. 2. Osteoporosis: it can cause generalized bone and joint pain, activity limitation, bone density examination can be clear. 3. Muscle strain: a fixed position for a long time can cause muscle strain in the lumbar and rib muscles, and the activity of the lumbar region leads to pain in both ribs. 4. Herpes zoster: viral invasion of the intercostal nerve can cause pain in the ribs, localized herpes, sensory hypersensitivity. There are many reasons for the soft rib pain on both sides of the waist, if the rest does not get better, it is recommended to go to the hospital for a checkup, a clear diagnosis and follow the doctor’s instructions for treatment.