The objective of this study was to model the Blood Flow into human arm’s arteries in order to define velocity profile. All steps were based on computational fluid dynamics .Simplified model for arm’s most important arteries were made, while primary data such as length, diameter, and velocity were collected for a healthy 40 years old, male , weight 64 Kg with pulse rate 62 bpm ,and his arteries ranges from 1.6 to 2.6 mm by using Doppler measurement.Bio dynami