  The concept of Maxwell demon plays an essential role in connecting
thermodynamics and information theory, while entanglement and non-locality are
fundamental features of quantum theory. Given the rapid advancements in the
field of quantum information science, there is a growing interest and
significance in investigating the connection between Maxwell demon and quantum
correlation. The majority of research endeavors thus far have been directed
towards the extraction of work from quantum correlation through the utilization
of Maxwell demon. Recently, a novel concept called Maxwell demon-assistant
Einstein-Podolsky-Rosen (EPR) steering has been proposed, which suggests that
it is possible to simulate quantum correlation by doing work. This seemingly
counterintuitive conclusion is attributed to the fact that Alice and Bob need
classical communication during EPR steering task, a requirement that does not
apply in the Bell test. In this study, we demonstrate Maxwell demon-assistant
EPR steering with superconducting quantum circuits. By compiling and optimizing
a quantum circuit to be implemented on a 2D superconducting chip, we were able
to achieve a steering parameter of $S_{2} = 0.770 \pm 0.005$ in the case of two
measurement settings, which surpasses the classical bound of $1/\sqrt{2}$ by
12.6 standard deviations. In addition, experimental observations have revealed
a linear correlation between the non-locality demonstrated in EPR steering and
the work done by the demon. Considering the errors in practical operation, the
experimental results are highly consistent with theoretical predictions. Our
findings not only suggest the presence of a Maxwell demon loophole in the EPR
steering, but also contribute to a deeper comprehension of the interplay
between quantum correlation, information theory, and thermodynamics.
