Lumbar pain when carrying heavy objects may have the following reasons: 1, lumbar instability and lumbar spondylolisthesis, this disease is common in young women, is due to congenital lumbar spine development is not good or due to degenerative lumbar spondylolisthesis leads to lumbar pain like lumbar folding, especially in the bending pain is very obvious. 2, lumbar muscle strain and lumbar dorsal myofasciitis, both of which are common in the long-term sedentary, cold or long-term Bending work patients, bending over to hold heavy objects will also appear waist pain, to carry out lumbar spine examination to exclude other diseases and diagnosis. 3, lumbar disc herniation, lumbar disc herniation in heavy lifting will make the protruding discs will aggravate the compression of the nerve, so that the symptoms of lumbar pain, to carry on the CT and MRI examination to further confirm the diagnosis and treatment.