The cause of high protein in urine is mainly due to damage to the glomerular filtration barrier, which can be transient or lifelong. If it is transient, the main consideration is that the possibility of overflow proteinuria is high, and a transient elevation of urinary protein can occur by eating a large amount of protein food recently. If the patient is a young male, postural proteinuria can also occur, especially in young males who are thin and tall. Some patients with increased urinary protein can be seen in the following situations: I. Glomerulonephritis, such as acute glomerulonephritis and chronic glomerulonephritis. Second, nephrotic syndrome is also the most common. Third, diabetic nephropathy. Fourth, hypertensive renal damage. Fifth, vasculitis nephropathy and so on. It is recommended that patients with high protein in the urine go to the hospital for further investigation of liver function, ionized renal function, glycated hemoglobin, urinary ultrasound and so on.