Photodissociation spectra of the complex Mg⁺-S₂(CH₃)₂ in the spectral region of 230～440 nm was observed. Mass spectrometry of the products for photo-induced reaction in the complex Mg⁺-S₂(CH₃)₂ exhibits the product Mg⁺ from nonreaction quenching and reactive products Mg⁺-SCH₃ throughout the whole wavelength range. The reactive products originate from the rupture of S-S chemical bonds. The photo dissociation spectrum consists of two broad peaks corresponding to the atomic transition of Mg⁺(3²P←3²S). The absorption spectrum by CIS method of quantum chemistry calculation agrees with the experimental spectrum.