Clinically, there is no saying that whether the kidneys are good or not can be known by looking at three points. Whether the kidneys are good or not usually needs to be initially determined by urine routine, kidney function tests and urinary ultrasound. Kidney is one of the main metabolic organs of human body, which can excrete metabolic waste through urination, so people with bad kidney will usually have changes in urination, and may also have abnormalities in memory, tone, hair, etc. If the kidney is damaged, the urine routine will usually show abnormal performance, such as the urine contains protein, glucose, or abnormal cell number, etc.; 2, kidney function: generally through blood tests, including blood creatinine, urea nitrogen, uric acid and several other items, can determine whether the metabolic function of the kidney has Abnormalities; 3. Urological ultrasound: the size and shape of the kidney can be observed through Doppler ultrasound to determine whether there are abnormalities in the kidney. Second, symptoms: 1, urination: there may be frequent urination, increased nocturia, leakage, foamy urine, hematuria, teal urine, etc., but there may also be little or no urine, but these conditions are not necessarily bad kidney; 2, color: people with kidney problems may have symptoms such as aging skin, dull face, dark eyes, etc., and serious cases may appear sallow face; 3, memory: if the kidney is bad, it may Will be accompanied by slow reaction, weakness and forgetfulness and other symptoms; 4, hair: people with bad kidney may appear dry and pale hair, hair loss and other situations; 5, other: may also appear hearing loss, tinnitus, back pain, cold limbs, low sexual function, growth retardation, abnormal menstruation and other situations. In addition, if the kidney is bad, the filtration or concentration function of urine decreases, which may lead to excessive excretion of protein and lower blood osmolarity, easily manifested as oedema of loose connective tissue, mainly in the face, such as eyelid edema.