Five signs of bad kidney that is, the early signs of kidney disease, there are more than five early signs of kidney disease, there are about the following seven: 1, edema: reduced glomerular filtration rate, resulting in reduced urine volume caused by edema, especially eyelid and lower limb edema is most obvious, edema can be reduced after rest; 2, the nature of urine: the nature of normal urine is clear and transparent, early kidney disease patients have more white foam in the urine, and the foam does not subside for a long time; 3, urine color: normal urine color is pale yellow, and early kidney disease patients have white foam, and the foam does not subside for a long time; 4, hypertension: the urine color is clear, but the specific gravity of urine can be found through examination. 3, urine color: normal urine color is light yellow, while the urine of patients in the early stage of kidney disease is clear, but through the examination can be found that the specific gravity of urine decreased; 4, hypertension: kidney lesions will cause an increase in blood pressure, can appear dizziness, headache, blurred vision and other symptoms; 5, back pain: the kidney area of the waist will appear sore or persistent dull pain; 6, too much or too little urine: normal people 24-hour urine volume of 1000 -2000mL, if it is lower or higher than this range, it may belong to abnormal urine volume, which means that the kidney may have problems; 7, increased nocturia: due to the decline of kidney function, it will cause frequent trips to the toilet at night and more nocturia than usual. When these conditions appear in your body you should go to the hospital in time to avoid missing the best time for treatment and delaying your condition.