Our purpose was to investigate the feasibility of NCE-MRA using Time-SLIP technique on healthy volunteers by determining the optimized TI value and its preliminary relationship with age as well. 61 healthy volunteers were recruited and divided into two age groups. The acquired data using six differernt TIs sequences were measured and analyzed to get three parameters including VKR, grade of renal artery branches and grade of imaging quality. In conclusion, the Time-SLIP technique is able to obtain renal MR angiography with optimized TI value 1500ms. Moreover, the age of individual subjects can affect the optimized TI value.