If you want to know whether your child’s kidney is good or not, you can judge from the following aspects: a. Symptoms and signs, if the child’s kidney is not good, the following abnormalities will appear in the symptoms and signs: 1. edema, bilateral eyelids and bilateral lower limbs edema, is due to protein in the urine, resulting in the loss of albumin in the body, edema caused by hypoproteinemia. 2. foamy urine, red urine or small amount of urine, foamy urine consider urine, protein in the urine, red urine consider urine blood, small amount of urine consider the need to exclude oliguria. 3. If the above symptoms appear, it is necessary to exclude the disease. 3. If the above symptoms appear, it is necessary to exclude the phenomenon of renal insufficiency in the child. If the child’s kidney is not good, the following abnormalities will occur: 1. urine routine, urine routine shows positive urine protein, positive occult blood, with granular tubular and red blood cell tubular, etc. 2. kidney function appears to be elevated creatinine, urea nitrogen, etc. 3. kidney ultrasound shows reduced blood flow in the bilateral kidneys, changes in kidney volume or abnormal kidney structure, stones, etc.