Evolution of electronic and magnetic properties in the topological semimetal <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Sm</mml:mi><mml:msub><mml:mi>Sb</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>Te</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>

The ZrSiS-type materials have attracted intensive attention due to the existence of various topological fermions. magnetic version materials, $\mathit{Ln}\mathrm{SbTe} (Ln=\mathrm{lanthanides})$, is an ideal candidate explore novel exotic states interaction between magnetism and topology. In this work, we report experimental study on structural, magnetic, thermodynamic, electronic properties for $\mathrm{Sm}{\mathrm{Sb}}_{x}{\mathrm{Te}}_{2\ensuremath{-}x}$ with Sb content. revealed evolutions these tuning compositions would provide useful insights fundamental physics future applications.