Renal anechoicity is the result of renal ultrasound. Renal anechoicity occurs when the density of renal fluid is lower than that of renal tissues, such as excessive urine, renal cysts and so on. 1. When the patient does the examination, it will show renal anechoic due to excessive urine, which is not normally excreted from the body. Review after urination can return to normal. 2. Kidney problems: for example, renal cysts, the fluid in the cyst can interfere with the examination and show renal anechoic phenomenon. Kidney cysts are a common benign disease, if they do not cause other special symptoms in the body, there is no need to do special treatment, regular review of ultrasound can be. If the cyst is large, compression of the local lumbar pain, hematuria and other symptoms, can be treated by surgery. In addition, do not hold urine during the examination. In terms of diet, eat more light food and don’t overwork. The phenomenon of renal echogenicity is relatively common, the specific causes need to be further examined, it is recommended that the patient go to the hospital in time, under the guidance of the doctor to clarify the cause of the symptomatic treatment.