${\mathrm{TaRhTe}}_4$ is a type-II Weyl semimetal (WSM), exhibiting four Weyl points in proximity to the Fermi level. In this article, we report our results of a systematic study of longitudinal magnetoresistance (MR) in ${\mathrm{TaRhTe}}_4$. Our findings indicate that MR becomes negative only when the magnetic field is applied parallel to the electric field. By rotating $\mathbf{E}$ (as well as $\mathbf{B}$), we show that its origin is consistent with the prediction of the chiral anomaly, while the current jetting effect and weak localization could be excluded. The negative MR persists up to room temperature, suggesting that ${\mathrm{TaRhTe}}_4$ exhibits distinctive properties within the family of WSMs.

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• Magnetotransport
• Topological materials
• Weyl semimetal