Urine protein ±, generally is the protein in the urine showed weak positive, suggesting that the amount of protein in the urine is not large, may be physiological factors or pathological factors caused by. 1. Physiological factors: such as a large number of protein-rich foods, emotional stress and strenuous exercise, may lead to a slight increase in urine protein, only need to pay attention to rest, control protein intake can be, generally do not need special treatment. 2. Pathological factors: for example, urinary tract infections can lead to damage to the epithelial mucosa of the urinary tract, causing urinary protein reabsorption to be destroyed, causing urethral white leakage, resulting in urinary protein: glomerulonephritis, such as tiny lesions type will lead to increased glomerular permeability, leading to a decline in filtration function, causing proteinuria. Urine protein ± more reasons, it is recommended that patients exclude physiological factors, timely to the hospital to identify the causes, follow the doctor’s instructions standardized treatment, so as not to delay the condition.