The aim of this study is to present the basic reference data of age and specipic gait parameters for comparisons of the gait characteristics depended on Unilateral Trans-Femoral or Trans-Tibial Prostheses. The basic gait parameters were extracted from 10 Adult, 10 above knee(A/K) patients and 10 below knee(B/K) patients, 50 to 60 years of age using VICON 512 Motion Analyzer. The results were as follows; 1) The mean Cadence of the above knee(A/K) patients and below knee(B/K) patients were $87.77{pm}8.64$ steps/min, to $99.84{pm}11.14$ steps/min.(p<0.05) 2) The mean Walking Speed of the above knee(A/K) patients and below knee(B/K) patients were $0.84{pm}0.15$ m/s, to $0.96{pm}0.25$ m/s.(p>0.05) 3) The mean Stride Length of the above knee(A/K) patients and below knee(B/K) patients were $1.14{pm}0.14$ m, to $1.14{pm}0.22$m.(p>0.05) 4) The mean maximal angles of joint on the hip flexion motion for different above knee(A/K) patients and below knee(B/K) patients were $34.75{pm}10.18_{circ}$, to $32.32{pm}6.34_{circ}$ .(p>0.05) 5) The mean maximal angles of joint on the knee flexion motion for different above knee(A/K) patients and below knee(B/K) patients were $66.97{pm}15.08_{circ}$, to $52.65{pm}9.21_{circ}$ .(p<0.05) 6) The mean maximal angles of joint on the ankle dorsiflexion motion for different above knee(A/K) patients and below knee(B/K) patients were $14.41{pm}4.82_{circ}$, to $10.04{pm}3.49_{circ}$ .(p>0.05) 7) The mean maximal angles of joint on the ankle plantarflexion motion for different above knee(A/K) patients and below knee(B/K) patients were $5.77{pm}3.17_{circ}$, to $2.75{pm}4.49_{circ}$ .(p>0.05)