A method for inspecting an electroconductive composite material including carbon fibers, the method comprising: disposing a first magnetic field measurement unit which acquires a magnetic field strength in a direction along a first detection axis so that the first detection axis is parallel to a set arrangement direction of the carbon fibers at a position facing a main surface (Sa) of a test specimen including the electroconductive composite material; disposing a second magnetic field measurement unit which acquires a magnetic field strength in a direction along a second detection axis so that the second detection axis is orthogonal to the set arrangement direction of the carbon fibers at the position facing the main surface (Sa) of the test specimen, wherein the main surface (Sa) is a surface along the first detection axis and the second detection axis; applying a current between one end and another end of the test specimen via the carbon fibers; storing a plurality of first magnetic field strengths output from the first magnetic field measurement unit in association with position information while relatively moving the first magnetic field measurement unit with respect to the main surface (Sa); acquiring a second magnetic field strength output from the second magnetic field measurement unit while relatively moving the second magnetic field measurement unit with respect to the main surface (Sa); and detecting a portion in which arrangement of the carbon fibers is disordered using the first magnetic field strength and the second magnetic field strength, wherein the detection of the portion in which the arrangement of the carbon fibers is disordered comprises: calculating a correction coefficient which corrects the first magnetic field strength using the second magnetic field strength; acquiring a corrected first magnetic field strength using the correction coefficient and detecting the portion in which the arrangement of the carbon fibers is disordered using the corrected first magnetic field strength. disposing a first magnetic field measurement unit which acquires a magnetic field strength in a direction along a first detection axis so that the first detection axis is parallel to a set arrangement direction of the carbon fibers at a position facing a main surface (Sa) of a test specimen including the electroconductive composite material; disposing a second magnetic field measurement unit which acquires a magnetic field strength in a direction along a second detection axis so that the second detection axis is orthogonal to the set arrangement direction of the carbon fibers at the position facing the main surface (Sa) of the test specimen, wherein the main surface (Sa) is a surface along the first detection axis and the second detection axis; applying a current between one end and another end of the test specimen via the carbon fibers; storing a plurality of first magnetic field strengths output from the first magnetic field measurement unit in association with position information while relatively moving the first magnetic field measurement unit with respect to the main surface (Sa); acquiring a second magnetic field strength output from the second magnetic field measurement unit while relatively moving the second magnetic field measurement unit with respect to the main surface (Sa); and detecting a portion in which arrangement of the carbon fibers is disordered using the first magnetic field strength and the second magnetic field strength, wherein the detection of the portion in which the arrangement of the carbon fibers is disordered comprises: calculating a correction coefficient which corrects the first magnetic field strength using the second magnetic field strength; acquiring a corrected first magnetic field strength using the correction coefficient and detecting the portion in which the arrangement of the carbon fibers is disordered using the corrected first magnetic field strength. calculating a correction coefficient which corrects the first magnetic field strength using the second magnetic field strength; acquiring a corrected first magnetic field strength using the correction coefficient and detecting the portion in which the arrangement of the carbon fibers is disordered using the corrected first magnetic field strength.