The temple is a solar shrine, dedicated to Surya, the sun god, for Chhath Puja.

According to oral tradition, Lord Vishwakarma built the Deo Sun Temple in one night.

However, some inscriptions and local oral traditions do hint at the presence of temple around the 7th or 8th century CE.

[3][4] Its written history can be traced back to the pala and senua periods, with an inscription from 1437 documenting the dedication of the template by King Bhairavendra.

Lakhs of devotees from all over Bihar and other regions visit temple to worship, attend Chhath Mela, bathe in the holy Surya Kund and offer arghya.