a biomagnetic measurement apparatus that readily enables the positional adjustment of a test object in biomagnetic measurement and a biomagnetic measurement method are provided . in biomagnetic measurement , in the case where the test object is a heart , for example , a permanent magnet is disposed on the body surface of the xiphoid process of a subject and the pectoral region is disposed under the bottom face of the cryogenic container . a processing unit stores the calibration curve of the permanent magnet and performs a process for estimating the positional relationship between the subject and the bottom face of the cryogenic container in accordance with the measurement result of the magnetic field strength of the permanent magnet . also , the processing unit performs a process for estimating the distance between the body surface of the test object and the bottom face of the cryogenic container .