Low molecular proteinuria is due to the filtration of the glomerular filtration membrane and the reabsorption of the renal tubules. In healthy individuals, the amount of protein (mostly proteins of small molecular weight) in the urine is small (less than 150 mg excreted daily), and the protein qualitative examination is negative. It is caused by the impairment of renal tubular function, so that the reabsorption of protein filtered through the normal glomerulus is impaired. Low molecular protein generally refers to proteins with a molecular weight of 40,000 d. Because renal tubules play an important role in the reabsorption and catabolism of low-molecular protein, the excretion of low-molecular protein urine increases in renal tubular lesions. It can generally be supplemented by eating protein foods, and the daily protein intake should be controlled at 0.6-0.8 g/kg body weight. In patients with nephritis who develop azotemia, or early renal insufficiency, protein intake should be limited. Otherwise, it will accelerate the deterioration of renal function. In conclusion, different dietary recipes should be used for different conditions. When a large amount of proteinuria appears in kidney disease patients, there is no need to be overly panic; when a small amount of proteinuria appears, the severity of the condition should not be overlooked, and it is better to diagnose the condition in time and develop a corresponding treatment plan for proteinuria. From the perspective of kidney pathological damage to completely restore kidney function and eliminate proteinuria. Prevention: 1. If you feel that you are usually stressed, it is best to eat a clean, easy to digest, fresh vegetables, fruits, low fat, low sugar, and moderate amount of water. Avoid mutton, spicy, stimulating, seafood, beef and other foods. 2, if proteinuria patients have a cold, fever, infection and other conditions should promptly consult a doctor to avoid is aggravation of the disease or complications. 3, in the use of drugs, all patients with kidney disease should be prohibited butylamine kanamycin, streptomycin, gentamicin and other nephrotoxic drugs. The use of aristolochic acid drugs such as cyanide and mucuna pruriens is prohibited. 4. Once edema occurs in the body, the intake of water and salt should be restricted, and patients without edema should not restrict the intake of protein and water. Those with yin deficiency, blood and urine fire should not use tonic drugs. 5, in daily life, we should maintain an optimistic and positive attitude towards life.