A blood magnetic stimulation device includes a magnetic stimulation unitthat has a stimulating coil for being connected to a blood delivering unit ordirectly worn by a user. The stimulating coil is further connected to apulse-generating unit that outputs a pulse current to excite the stimulatingcoil, soas to use electromagnetic pulses to apply strong yet transient magneticstimulation to blood passing through the magnetic stimulation unit or to bloodinthe user's subcutaneous vessels, thereby providing magnetic treatment forviremian and related diseases. As compared to the existing blood treatingdevices, the magnetic stimulation provided by the blood magnetic stimulationdevice incurs no sharp pain and uncomfortableness, and is safer and moreacceptable to patients.