Bad kidneys can cause bad stomach, nephritis patients early manifestations of fatigue, fatigue, back and knee pain, Na poor, with the decline in renal function, to chronic renal failure end-stage urine, that is, toxidrome will appear uremia symptoms, digestive symptoms are manifested in the morning nausea, vomiting, loss of appetite, saliva in the urea is broken down to become ammonia, the exhaled smell of urine and metal taste, and the serious ones can be seen peptic tract Ulcers, causing gastrointestinal bleeding. Patients with nephrotic syndrome have a large amount of proteinuria because of hypoproteinemia, and hypoproteinemia leads to generalized edema, causing gastrointestinal edema leading to indigestion and bloating. With nephritis nephropathy should actively control blood pressure, reduce proteinuria, if proteinuria >1g/24h, blood pressure needs to be controlled below 125/75mmHg; proteinuria <1g/24h, blood pressure needs to be controlled below 130/80mmHg, can choose to protect renal function, reduce proteinuria antihypertensive drugs, such as angiotensin-converting enzyme inhibitors and angiotensin receptor inhibitors. If there are indications for renal biopsy, renal biopsy is feasible to clarify the pathological type, determine the prognosis and guide the treatment.