Abstract. Ultrasound phantoms are standardized biological tissue models with well-defined acoustic properties, dimensions, and internal characteristics. Despite blood flow is a relevant factor in heat transfer in biological tissues, flow phantoms applied to therapeutic ultrasound are scarce in the literature. Therefore, this work aims to develop an ultrasound flow phantom capable of generating continuous flow with values similar to brachial artery. The phantom was made of agar based material with a tube of 4.6 mm of inner diameter inserted within, including a region of interest. The flow was produced with a linear flow propulsion system, generated by a peristaltic pump and an equalizing pressure system of milimetric graduated columns. The phantom was capable of generating adjustable and continuous flows rate. The flow rate generated by flow phantom propulsion system range between 20.85 ± 0.95 m³.s -1 and 118.36 ± 1.18 m³.s -1 . Those values are similar to flow rate values in the brachial artery. We expect to apply the ultrasonic flow phantom to therapeutic ultrasound safety evaluation in testing houses.