Constraints on cosmology from cluster number count strongly depend on the accuracy of cluster masses which are sensitive to the dynamical state of clusters, thus it is of importance to be able to measure accurately the dynamical state of each cluster. eROSITA telescope on board of Spectrum-Roentgen-Gamma (SRG) mission was launched in July 2019. eROSITA's large effective area, good spatial resolution, and a large field of view allow observing large areas of the sky. eROSITA Final Equatorial Survey, the largest contiguous, uniformly sampled X-ray field scan to date was completed in just 4 days during the Performance Verification phase. We found more than 400 extended sources in the 140 square degree eFEDS field. In this talk, we will present the measurements of several morphological parameters: surface brightness concentration, ellipticity, cuspiness, power ratios, and photon asymmetry of eFEDS extended sources. The fractional number of clusters with cool-core/non-cool-cores will allow us to investigate the distribution of the morphological parameters with respect to their mass and dynamical state.