Measuring method of magnetic resistivity of substance under the condition of high voltage

The invention relates to a measuring method of the magnetic resistivity of a substance under the condition of high voltage, belonging to the technical field of measurement of physical quantities. The magnetic resistivity of the substance is measured on diamond anvil cells of a metal film electrode (13) on the basis of the van der pauw resistance measurement method according to the following test steps of: assembling equipment; regulating a magnetic field; carrying out the in-site measurement of magnetic field strength; measuring the magnetic resistivity; and the like. The metal film electrode (13) is deposited on one the used diamond anvil cells; a pressing machine (5) and a spacer (4) are both made of nonmagnetic materials; and only a shaking table (2) is made of steel materials. The invention mainly obtains the technical effect of accurately measuring the magnetoresistance effect of a sample under the condition of the high voltage, establishes a nonmagnetic measurement environment, provides a uniform magnetic field on space for the sample, eliminates the influences of lead resistance and contact resistance and carries out the in-site measurement on the magnetic field strength inside a cavity of the sample; and in addition, the used metal electrode (13) can bear high pressure without being cut easily.