[1] He is most known for his Odissi songs and kabyas written in the Odia language, primarily Baidehisa Bilasa, Labanyabati & Koti Brahmanda Sundari.

His grandfather King Dhananjaya Bhanja was a great poet and wrote Raghunatha Bilasa (The Ramayana), Ratna Manjari (a poetical romance) etc., which provided models to the prince for writing.

[citation needed] So for Upendra Bhanja, plot and character are not important but momentous feeling influences the character as well as the plot in the structural poetic forms and techniques with explosive reason and emotion in a way of synthetic, stylistic approach in almost all aspects of his expression through Odia language, literature, culture, socio-cultural behaviour, with high moral order and thoughts of superior human being.

On the other hand, his writings are being popularised by the commoners because of sensible, emotional touch with sympathetic unusual feelings of the human kind in the context of aesthetic sense and sensibility along with love and lovability of the mankind as experienced through the ages of time together.Strangely, without any deep appreciation of human value and literary appreciation with standard principles of study literature as prescribed in the research methodology and literary criticism with reference to classical Indian poetics, the poet Upendra Bhanja is being misunderstood by some pseudo critics/scholars and writers[who?]

Consequently, in the year 1988 Dr. Abhimanyu Baral submitted the thesis "Odia reetikabya paramparare Baidehisha Bilasa" to Utkal University, Bhubaneswar.

His compositions are well-known across the state of Odisha and are frequently employed in Odissi dance as well as Gotipua, Sakhi Nata, Prahallada Nataka, Radha Prema Lila and other allied artforms.

The style of presenting facts with comparable factors (upama) is very distinguishable in his “Baidehisha Bilasa” is the pioneer work of Upendra Bhanja as declared by the poet.

"Rasika Harabali" was written on the basis of his own experience at the early part of his young life.His contemporary poet of Bhakta Kabi, Dina Krushna Das as described in his work “Kala Koutuka”.

The socio-cultural way of contemporary Odias are vividly described in his literature .Upendra Bhanja is not only eminent poet of Odisha but also his writings will be explained through all classical contemporary music systems of India Upendra Bhanja had a poetic excellence and he has written all his Kabyas as the rules of Alankarshastra of that time, but his kabyas have made some critiques irritated for the sexuality he used in his imagery descriptions.