During recent years, Vietnam has witnessed a number of types of chain saw imported from diferential commercial firm with the aim of machanization for logging element. In order to utilise this available prime mover and to increase the utilization efficiency in multifuntion way, study on design the specialized holding device mouted with chain saw is very necessary. This study might help to improve working conditions for workers, to increase capacity and output quality. By collection method, a compatible structure of the holding device has been selected from reference materials. According to the design option, after caculations for design, manufactured parts of holding device mouted with Husqvama 365 chain saw were already proceeded and carried out a test. Test results illustrates that saw-milling seems tobe easier as using chain saw mouted with a holding device. As the result, capacity and output quality will be remarkably increased.