Radial artery pseudoaneurysm ultrasonographic manifestation is to see anechoic area around the radial artery, CDFI manifestation is to see red and blue swirling blood flow inside, at the same time, it is seen that there is a rupture of the radial artery connecting with this anechoic area, and flowery blood flow can be seen at the rupture in a bi-directional spectrum. Pseudoaneurysm is a localized mass that forms in the surrounding tissue after rupture of the arterial wall due to trauma, inflammation, etc. and may be accompanied by a distensible pulsation, which is then gradually wrapped by fibrous tissue proliferation. Pseudoaneurysms require differential diagnosis from hematomas and true aneurysms. Ultrasonographically, hematoma and pseudoaneurysm can be differentiated by the presence or absence of blood flow signals within the mass and its position in relation to the artery. True aneurysms, on the other hand, appear on ultrasound as a localized aneurysmal dilatation of the artery, which is connected to the artery. When a pseudoaneurysm of the radial artery is suspected, it is necessary to consult a doctor in a timely manner for a definitive diagnosis and standardized treatment under the guidance of the doctor.