The density of states of a two-dimensional electron gas in low-dimensional diluted magnetic semiconductor is studied analytically. A single-particle Hamiltonian incorporating effective-mass kinetic energy, Landau quantization, ordinary Zeeman coupling, and the mean-field exchange interaction between conduction-band electrons and localized Mn ions is constructed, and a general form the density of states expression is obtained. The exchange term is evaluated via the Brillouin function, making the spin splitting strongly dependent on both temperature and Mn concentration x. Unlike non-magnetic two-dimensional systems, the density of states profile here is simultaneously tunable through three independent parameters magnetic field B, temperature T, and Mn concentration x a flexibility that makes diluted magnetic semiconductor superlattice particularly attractive for spintronics applications requiring a field-tunable, spin-resolved electronic structure.