The invention discloses a magnetic logger verifying apparatus and method. The magnetic logger verifying apparatus comprises a solenoid covering a magnetic induction probe that is detachably and vertically fixed to a central position within the solenoid; a current-adjustable DC power supply which supplies power to the solenoid; and an ammeter which is connected in series between the solenoid and the DC power supply. The magnetic logger verifying apparatus and method can achieve a purpose of verifying and calibrating respective main technical parameters of the magnetic logger, are simple in structure and good in operability, and promote the integrity of the production, the use and the management of the magnetic logger, realize standardized management, and have good economic and social benefits.