Paper deals with evaluation of remaining stand damage and forest soil after the work of harvesting system Neuson 103 HVT and Novotný LVS 520. We characterize technology based on harvesters in the general point of view, harvesters and forwarders´ constructional parts. Moreover, we focus our attention to description of construction of tracked chassis and its functional principle. Furthermore, we elaborate the issue which occupies damage of remaining stand, undergrowth and forest soil. We refer to negative impacts which are brought by damage. It is essential to familiarize with technology based on harvesters from environmental aspect since the stand and soil damage may cause the decrease of value and potentional yield in future. We also described the felling limitations of stand damage caused by harvesting system. In addition, similar studies and results were covered in studies of Slovak and foreign authors. Measurements were performed in LC Lesy Spišského Biskupstva Spišská Teplica in stands 586, 585, 589, 587 a, 588 b a 620, where were established 52 research areas. In locality LC Dobšiná a Nižná Slaná were founded 16 research areas in stands 297 a, 299 b and 305 to detect the damage of forest soil after activity of harvesting system Neuson 242 HVT a Valmet 840.2. We statistically processed acquired empirical data in graphs, charts and tables. Consequently, we found out that average damage was 29,07 % with average felling intensity of 26,45 % and average damaged area of 286,05 cm2. In terms of soil damage, it was detected low degree of soil destruction and mean degree of mechanical soil destruction intensity.