Protein (++++) in the urine suggests the presence of proteinuria in the patient. There are numerous causes of proteinuria, and patients need further examination to clarify the specific causes: 1. When there is a condition of kidney disease, it can cause an increase in urinary protein, such as glomerulonephritis, nephrotic syndrome, which can lead to the destruction of the filtration membrane of the glomerulus and increased leakage of protein from the blood, which can cause Urine protein (++++). It may also be accompanied by hematuria or with abnormal kidney function, hypoproteinemia and other manifestations, need to be further examined and given targeted treatment; 2, after the infection can also appear urine protein (++), but this condition is usually accompanied by an increase in the number of white blood cells and bacteria, and can be accompanied by urinary tract irritation symptoms, after treatment after the infection is cured, urine protein can be restored to normal; 3, when there is an increase in body temperature, nephrosis, nephrotic syndrome; 3, when there is elevated body temperature, excessive exercise or the existence of IgA nephropathy, renal vascular nutcracker syndrome and many other conditions, can lead to urine protein (++ +), further examination is needed to confirm the diagnosis.