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The ZrSiS-type topological material family has attracted growing interests. The magnetic member of the ZrSiS-family, LnSbTe (Ln = magnetic lanthanides), are ideal candidates to explore novel exotic states due to coupling between magnetism and topology. Here we present experimental investigation on SmSb_xTe_2-x. The evolution of structural, magnetic, thermodynamic, and electronic properties with varying Sb-Te composition is studied. Our finding reveals that the SmSb_xTe_2-x material could be a rare platform to investigate novel quantum phenomena as a result of inherent magnetism, topology, and possible enhanced electronic correlations.