The Chhau mask is a traditional cultural heritage of Purulia in the Indian state of West Bengal. The Chhau mask of Purulia is registered on the List of Geographical Indications. As the basic difference of Purulia Chhau the mask is unique and traditional.

It is the mask which differentiates the Purulia Chhau from its other two significant branches: the Seraikella Chhau of Jharkhand and the Mayurbhanj Chhau of Odisha. The Jharkhand counterpart does involve masks but they are rather simpler, small and evocative, without any of the pompous vibrancy of the Purulia variants. While the Mayurbhanj type is an unmasked form. It is the Purulia form only that uses large evocative masks along with elaborate costumes that intensify the energetic performance, despite of the challenges to physicalization.

The mask allows the artists to morph into the character