The invention provides a blood vessel imaging method and device. The blood vessel imaging method comprises the following steps: a scanning step: scanning a TOF sequence without a pre-saturation pulseband; and an extraction step: extracting artery blood vessels and vein blood vessels from the scanned image. According to the blood vessel imaging method and device, the pre-saturation pulse is not applied to the TOF sequence, so that the time occupied by the pre-saturation pulse can be saved, and a plurality of layers can be excited within one repetition time to achieve the purpose of quickly scanning and filling the K space, and the scanning time is also shortened. Under the condition that pre-saturation radio frequency pulses are not applied, deep learning training is conducted on the modelthrough a large number of magnetic resonance training images, and artery blood vessels and vein blood vessels are segmented from surrounding tissue through regression analysis or a convolutional network and the like, and a pure artery or vein blood vessel image is obtained.