Causes of hyperechoic kidneys include renal cysts and renal tumors. Renal hypoechoic is the terminology used in ultrasound imaging examinations. It indicates the presence of fluid-like tissue localized in the kidneys, and the location, extent, and surrounding lesions of the hypoechoic area need to be determined. Renal cysts are one of the most common structural abnormalities of the kidney. Generally, the size of renal cysts does not exceed 2cm, and usually there are no other uncomfortable symptoms, at this time do not need special medication; if the size of renal cysts exceeds 5cm, or accompanied by sensory bleeding and other complications, surgical treatment should be carried out. Renal tumors may also show intrarenal hypoechoic areas, most commonly seen in renal malignant tumors, which can be identified by enhanced CT to identify the benign and malignant nature of the tumor. Double kidney hypoechoic may also have other reasons, it is recommended that patients with renal hypoechoic patients in a timely manner in the regular hospital for examination, can be through the routine urinalysis, urological ultrasound of both kidneys, renal CT examination, magnetic magnetic examination, etc. to clarify the condition, under the guidance of the doctor targeted treatment.