Kidney deficiency does not usually lead to lack of clear corticomedullary boundaries of both kidneys. Kidney deficiency is the name of a Chinese medicine evidence, which mainly refers to the deficiency of essence, yin and yang of the kidneys. There are many types of kidney deficiency, the most common of which are kidney yin deficiency and kidney yang deficiency. Symptoms of kidney yang deficiency mainly include lumbar pain and discomfort, cold limbs, and fear of cold, etc. Symptoms of kidney yin deficiency mainly include lumbar pain, dryness and heatiness, night sweating (sweating abnormally after going to sleep, but sweating stops after waking up), false sweating, and dizziness and tinnitus. Dual renal corticomedullary boundaries are not clear, this is only a common term used in renal ultrasound to describe the condition, mainly to indicate the possible existence of renal parenchymal damage, but can not be used to confirm the diagnosis, you need to combine with renal function, urinary routine and other tests to make a comprehensive judgment. Kidney deficiency and double renal corticomedullary boundary insufficiency, one is the name of the Chinese medicine evidence, and the other is the Western medicine postoperative, can not be generalized, and kidney deficiency will not directly cause double renal corticomedullary boundary insufficiency. If there is a related problem, it is recommended to go to the hospital, and determine the treatment plan after the specialist has clarified the disease.