An implantable biological electrode, including a wire (2), wherein two ends of the wire (2) are connected with a contact (1) and a connector (3) respectively. The contact (1) comprises a conductive non-magnetic nanofiber with a specific resistivity or a conductive film with a specific centre resistivity. A medical assembly comprises the implantable biological electrode. A contact prepared by the winding of a nanofiber or film material with a relatively high resistivity can effectively suppress turbulence and improve the safety of the electrode during magnetic resonance imaging.
