The invention belongs to the technical field of plasma detection, and discloses a high-temperature-resistant magnetic field probe for measuring the internal magnetic field distribution of a high-temperature and high-speed plasma. The high-temperature-resistant magnetic field probe comprises a magnetic field probe, a supporting and fixing seat, and a coaxial connector, wherein the magnetic field probe is used to receive space magnetic field signals and internal magnetic field signals of the high-temperature and high-speed plasma; the supporting and fixing seat is used for the fixation of a ceramic dielectric of the magnetic field probe and the installation and fixation of the coaxial connector, so that the magnetic field probe can be protected from impact damage by the plasma flowing at a high speed; and the coaxial connector is used to transmit the signals to the magnetic field probe. The high-temperature-resistant magnetic field probe disclosed by the invention has the advantages thatthe problem that the conventional probe cannot endure a high temperature is solved, that is, the probe adopts the form of coplanar waveguide and is coated by a high-temperature-resistant ceramic material, so as to achieve high temperature resistance; the probe adopts a dual-loop structure, so that the problem that asymmetric measurement results are caused by a single-loop unbalanced structure issolved, and the frequency band range is extended; and meanwhile, the magnetic field probe is etched on a dielectric substrate with a dielectric constant of 4.2, so that the size is reduced to 0.49 ofthe size of the traditional probe (the equation is shown in the description), and the probe sensitivity is further improved.