1. Collection of CKD patient group： The patients who will select into this plan are chosen from the hospital (This hospital is defined as the renal disease improving institute) in Taiwan. New case in this hospital will be collected into the CKD patient group. In order to separate those patients into five stages of CKD, we are going to calculate the glomerular filtration rate (GFR) by using the formula of GFR. Stage I -- Renal function is normally and protein was detectable slightly in urine (GFR：≧90ml/min/1.73M2). Stage II -- Slight renal function failure was observed (GFR：60~89ml/min/1.73M2). Stage III -- Moderate renal function failure (GFR：30~59ml/min/1.73M2). Stage IV -- Severe renal function failure (GFR：15~29ml/min/1.73M2). Stage V -- End stage renal disease (GFR：＜15ml/min/1.73M2). The age is from fourteen to eighty-five and whatever they are male or female will be taken into this project.