Vibration is one of the most important problems in the field of forestry with a chainsaw. The purpose of this study was to measure the vibration of the chainsaw on the hands and arm of sawmiller while cutting the trees in the educational and research forest of Kheyroud located in Mazandaran province. Two alder, Persian ironwood, and poplar trees, which have different densities, were selected and vibration was measured using the SVANTEK vibration instrument, simultaneously in three directions, i. e. x, y and z. For the evaluation of motor vibration, the averaged vibrational vibration index (aeq), total ahv shaking averaging, vibration transmission coefficient (TR) and daily exposure time (A8) were used. It was shown that the mean value of the vibration equivalent of aeq in all three axes (x, y, z) of Persian ironwood is more than poplar and alder species and is significant in all three species in the x direction. The results of Duncan's test showed that there is a significant difference between the three axes (x, y, z) in Persian ironwood and there is a significant difference between x and z in the poplar and alder species and direction y with direction x and also with z direction (P <0. 05). The results also showed that the total vibration of the ahv, motor vibration transmission (Tr) and the daily exposure period (A (8)) in the bin of Persian ironwood is more than poplar and alder species. Due to this difference, it is possible to increase the density, decrease the moisture content and the diameter of the Persian ironwood tree. Therefore, the sawing worker during the cutting of the Persian ironwood is exposed to more vibrations and is likely to develop white-handed disease, which implies the need to observe safety tips, ergonomic principles, and shorten the working hours of a chainsaw worker.