Urine protein (++) represents the presence of protein in the urine, often caused by kidney disease, while negative represents the meaning of this indicator should be negative should not appear positive, it belongs to the reference range. There are many diseases that can cause positive urine protein in clinic, such as glomerulonephritis, nephrotic syndrome, diabetic nephropathy, lupus nephritis, etc. Therefore, it is necessary to combine the patient’s specific condition and cause of the disease to formulate a treatment plan, and to prevent the aggravation of kidney disease by applying some medicines to protect kidneys and reduce the amount of urine protein. Usually, we should also pay attention to regular follow-up examinations in the hospital to monitor the changes of the condition, and pay attention to the prevention of cold and flu, and do not stay up all night and overwork. In terms of diet, pay attention to the principles of low salt, low fat, high quality and low protein.