Abstract <p>In this paper, we consider the Schwarz boundary value problem in the partial eclipse domain. The parqueting–reflection method can be used to construct explicit solutions of complex boundary value problems for partial differential equations. We apply the parqueting–reflection principle for the partial eclipse domain to achieve the points of the complex plane. Then, using this method, we introduce the poly-Schwarz operator and the T-type operator for the partial eclipse domain and study the properties of these operators. Finally, based on the properties of the poly-Schwarz operator and the T-type operator, we investigate the schwarz problem for the inhomogeneous polyanalytic equation in the partial eclipse domain and provide an explicit solution.</p>