The invention discloses a specimen embedding device and method. The specimen embedding device comprises an embedding box, a first shielding box, and a second shielding box, wherein a groove for accommodating a specimen is formed in the bottom of the embedding box; the first shielding box is arranged on the side part of the embedding box and is provided with a first opening; the first opening faces the side wall of the embedding box; an electromagnet is arranged in the first shielding box; the magnetic field of the electromagnet expands outside the first shielding box through the first opening; the second shielding box is arranged below the embedding box and is provided with a second opening; the second opening corresponds to the groove of the embedding box; a strong magnet is arranged in the second shielding box; the magnetic field of the strong magnet expands outside the second shielding box through the second opening. The magnetic field intensity of the electromagnet is variable; moreover, the relative position between the first shielding box and the embedding box is adjustable.