A spectral position adjusting apparatus for biomarker testing, comprising an optical receiver module (3), a transmission mechanism, a coil (9), a magnet (10), and a base (11). A part of the transmission mechanism is fixed on the optical receiver module (3), while another part is fixed on the base (11). The coil (9) is fixed on the transmission mechanism. The magnet (10) is in proximity to the coil (9). This allows the coil (9), when powered, to drive the optical receiver module (3) into rotation via the transmission mechanism under the effect of the magnet (10). The apparatus allows convenient and rapid changes to the spectral position of an infrared radiation reflected light of a biomarker in a test substance in a biomarker surface plasmon resonance technology examination process, thus acquiring validity information of the biomarker in the test substance.