The thesis describes characteristics of the study area, Královská obora, where the investigation was carried out in the field. It also engages in the description of the studied trees, wood-decaying fungi and damage of trees that occurs and causes problems here, in Stromovka, especially in the most visited areas of the park. Various injuries are a common cause of infection of pathogenic fungi that threatens a stability of trees and hence a safety of the park visitors. Health assessment conducted in location in the park Stromovka, which are problematic due to the occurrence of wood-decaying fungi. The locations were placed at the Planetarium, for the track and along the track. It was focused on the occurrence Meripilus giganteus on beeches, whom they are in the park problems with, particularly on heavily visited sites. 663 trees were inspected in total. The statistical analysis showed that most of the damages of trees in the park Stromovka was dry branches (12 % of the total trees ), probably it was as a result of above-average temperatures in 2015. Only 3 % of the total number of inspected trees were infected by wood decaying fungi. Most of the trees were infected by Inonotus cuticularis (23 % of the total number of found wood-destroying fungi). Meripilus giganteus caused 14 % of the total number of found wood-destroying fungi dameges on the trees in the area. The infestation by pathogenic fungi was not significant on the inspected trees, it could be caused by above average temperatures and below-average rainfall in 2015. At the same time their presence was influent by a felling of trees in studied area from November 2014 to the end of March 2015. It was decided on the basis of dendrological research, that the identified riskiest trees infested by fungi and dying trees with disrupted stabilitye.