Urine protein 0.3g/24h is not normal, suggesting proteinuria, which is divided into physiological and pathological conditions. 1. physiological: the body strenuous exercise, fever, and other physiological state, can cause temporary, mild urine protein, called functional proteinuria. This kind of proteinuria can disappear with the elimination of the factors affecting the body’s physiological response and the recovery of renal function, the qualitative generally not more than (+), quantitative <0.5g/24h, mostly seen in adolescents. 2. Pathologic: including glomerular proteinuria, tubular proteinuria, mixed proteinuria, etc., need to clarify the etiology and timely treatment. If urinary protein, should be timely to the hospital, clear cause, under the guidance of the doctor for standardized treatment.